This document summarizes key concepts about solutions from Chapter 6. It defines terms like solute, solvent, aqueous solutions, and discusses different types of solutions like liquids, solids, and gases. It then covers general properties of solutions like clarity and color. Specific topics discussed include concentration in terms of mass, moles, and equivalents. Colligative properties like vapor pressure, boiling point elevation, freezing point depression, and osmotic pressure are explained. The importance of water as a universal solvent is also highlighted.
This document summarizes key concepts about solutions from sections 13.1-13.5 of a chemistry textbook. It discusses the solution process, factors that affect solubility such as temperature and pressure, and different ways of expressing concentration including mass percentage, molarity, and molality. It also covers colligative properties of solutions such as vapor pressure lowering, boiling point elevation, and freezing point depression. Colligative properties depend only on the number of solute particles and are greater for electrolyte solutions which dissociate into ions.
* Ethylene glycol (C2H6O2) molar mass = 62.07 g/mol
* Solution contains 478 g ethylene glycol
* Moles of ethylene glycol = 478 g / 62.07 g/mol = 7.69 mol
* Solution contains 3202 g water
* Mass of water = 3202 g
* Molality = moles of solute / kg of solvent
= 7.69 mol / 3.202 kg
= 2.40 m
* Freezing point depression constant (Kf) for water is 1.86 °C/m
* Freezing point depression = ΔTf = Kf × m
= 1.86 °C
A solution is a homogeneous mixture of two or more substances, where the solute is dispersed uniformly throughout the solvent. The solubility of a solute is dependent on temperature, pressure, and the nature of the solute and solvent. Solubility is expressed as the maximum grams of solute that will dissolve per 100 grams of solvent. Colligative properties, such as boiling point elevation and freezing point depression, depend only on the number of solute particles and not their identity.
Solutions: types and properties of solutions. Units of concentration, ideal and real
solutions. Henry’s law, distribution of solids between two immiscible liquids, distribution
law. Partition coefficient and solvent extraction.
Grade 8 Integrated Science Chapter 10 Lesson 2 on properties of solution, solubility, concentration, solvents, and solutes. Understanding how to change solubility of a solute in a solvent.
The document discusses various properties of solutions including the different states that solutions can exist in, components and relationships in solutions, energy changes during the formation of solutions, factors that affect solubility such as polarity, pressure, and temperature, and colligative properties which are properties that depend only on the number of solute particles and not their type. It also covers topics such as vapor pressure lowering, boiling point elevation, freezing point depression, and osmotic pressure.
This document discusses different types of solutions including dilute, concentrated, solvent, solute, and concentration. It defines normal saline solution as containing 0.9% sodium chloride, similar to blood and tears. Normal saline solution has medical uses like wound cleaning and IV hydration. The document also discusses percentage solutions in terms of mass, volume, and mass-volume. Buffer solutions resist pH changes when acids or bases are added. Molar solutions are prepared by dissolving a certain number of moles of solute in 1 liter of solution.
This document summarizes key concepts about solutions from sections 13.1-13.5 of a chemistry textbook. It discusses the solution process, factors that affect solubility such as temperature and pressure, and different ways of expressing concentration including mass percentage, molarity, and molality. It also covers colligative properties of solutions such as vapor pressure lowering, boiling point elevation, and freezing point depression. Colligative properties depend only on the number of solute particles and are greater for electrolyte solutions which dissociate into ions.
* Ethylene glycol (C2H6O2) molar mass = 62.07 g/mol
* Solution contains 478 g ethylene glycol
* Moles of ethylene glycol = 478 g / 62.07 g/mol = 7.69 mol
* Solution contains 3202 g water
* Mass of water = 3202 g
* Molality = moles of solute / kg of solvent
= 7.69 mol / 3.202 kg
= 2.40 m
* Freezing point depression constant (Kf) for water is 1.86 °C/m
* Freezing point depression = ΔTf = Kf × m
= 1.86 °C
A solution is a homogeneous mixture of two or more substances, where the solute is dispersed uniformly throughout the solvent. The solubility of a solute is dependent on temperature, pressure, and the nature of the solute and solvent. Solubility is expressed as the maximum grams of solute that will dissolve per 100 grams of solvent. Colligative properties, such as boiling point elevation and freezing point depression, depend only on the number of solute particles and not their identity.
Solutions: types and properties of solutions. Units of concentration, ideal and real
solutions. Henry’s law, distribution of solids between two immiscible liquids, distribution
law. Partition coefficient and solvent extraction.
Grade 8 Integrated Science Chapter 10 Lesson 2 on properties of solution, solubility, concentration, solvents, and solutes. Understanding how to change solubility of a solute in a solvent.
The document discusses various properties of solutions including the different states that solutions can exist in, components and relationships in solutions, energy changes during the formation of solutions, factors that affect solubility such as polarity, pressure, and temperature, and colligative properties which are properties that depend only on the number of solute particles and not their type. It also covers topics such as vapor pressure lowering, boiling point elevation, freezing point depression, and osmotic pressure.
This document discusses different types of solutions including dilute, concentrated, solvent, solute, and concentration. It defines normal saline solution as containing 0.9% sodium chloride, similar to blood and tears. Normal saline solution has medical uses like wound cleaning and IV hydration. The document also discusses percentage solutions in terms of mass, volume, and mass-volume. Buffer solutions resist pH changes when acids or bases are added. Molar solutions are prepared by dissolving a certain number of moles of solute in 1 liter of solution.
This is the power point presentation for the students of class XII. This includes: Types of solutions, concentration of solutions, Solution of solid in liquid, solution of gas in liquid: Henry's law, vapour pressure of solutions, Raoult's law, Ideal & non ideal solutions, azeotropic mixtures, Colligative properties - (1) relative lowering of vapour pressure of solution of volatile solute, (2) elevation in boiling point of solution (3) depression in freezing point of solution (4) osmotic pressure, abnormal molar mass of solute, Van't Hoff's factor, numerical problems.
Solutions are homogeneous mixtures of two or more components. Key characteristics of solutions include concentration, vapor pressure, boiling point, freezing point, and osmotic pressure. Concentration, vapor pressure, boiling point elevation, freezing point depression, and osmotic pressure are colligative properties that depend only on the number of solute particles and not their identity. Deviations from ideal behavior are classified as positive or negative. Solutions can form azeotropes with unique boiling points.
The document defines key terms related to solutions and solubility including solute, solvent, miscibility, saturated solutions, and supersaturated solutions. It also describes electrolytes, nonelectrolytes, Raoult's law, and units for expressing concentration like molality and molarity. The document provides fundamental information about the nature and properties of solutions.
The document discusses solutions and solubility. It defines key terms like solute, solvent, and solution. It explains that solutions are homogeneous mixtures where solutes spread evenly throughout solvents on a molecular scale. Solutes can be separated from solutions by evaporation but not filtration. The document also discusses how like dissolves like, with polar solvents dissolving polar and ionic solutes, and nonpolar solvents dissolving nonpolar solutes.
This document provides information on solution chemistry and concepts including:
- Definitions of key terms like solution, solute, and solvent
- The process of dissolution where solvent molecules pull apart solute molecules
- How saturated, supersaturated and concentrated solutions are classified
- Factors that influence solubility like temperature, pressure and nature of solute
- Colligative properties of solutions like vapor pressure lowering, freezing point depression and boiling point elevation that depend on amount of solute.
- Equations to calculate values like molarity, molality and mole fraction in solutions.
A solution is a homogeneous mixture composed of a solute dissolved in a solvent. A solution is formed through solvation, where solvent particles surround solute particles and pull them away from each other. The solubility of a substance depends on factors like temperature, pressure, and the properties of the solute and solvent. Increasing temperature, pressure, surface area, or agitation can increase solubility and the rate of solvation. Concentration refers to the ratio of solute to solvent and affects properties like reaction rates.
This document discusses different methods of expressing the concentration of solutions, including percentage by weight/weight (% w/w), percentage by weight/volume (% w/v), percentage by volume/volume (% v/v), parts per million (ppm), and molarity (M). It provides examples and practice problems for each method. It also covers how dilution affects concentration, standard solutions, primary standards including sodium chloride and potassium dichromate, and common substances that are not primary standards like sulfuric acid and sodium hydroxide.
Gseb class 12 chemistry sem 3 ch 2 solution part 1Saumil Sharma
1) A solution is a homogeneous mixture of two or more substances, where the component present in the largest amount is the solvent. The other components are called solutes.
2) The properties of a solution are uniform throughout and the components are microscopic in size. Solutions can exist in solid, liquid, or gas states depending on the states of the solvent and solute.
3) The concentration of a solution can be expressed in several units including molarity, molality, mass percentage, and parts per million. The solubility of a substance depends on properties of the solute and solvent as well as temperature and pressure.
This document discusses chemistry of solutions. It defines key terms like solute, solvent and solution. It explains that a solution is a homogeneous mixture of two or more substances. The solute is dispersed uniformly throughout the solvent. Factors that affect solubility are also discussed, like temperature, pressure, molecular size and polarity. Henry's law is introduced, which states that the solubility of a gas is directly proportional to its partial pressure.
This document discusses solutions and various concepts related to solutions. It defines solutions as homogeneous dispersions where substances are mixed at the molecular or ionic level. It describes the particle sizes of different types of mixtures and defines key terms like solute, solvent, concentration, and saturation.
The document explains that the dissolving process is dynamic, involving both dissolution and crystallization rates. Solubility depends on factors like the nature of the solute and solvent, temperature, and pressure. Concentration can be described qualitatively or quantitatively using terms like molarity, molality, and mole fraction. Dilution decreases concentration by adding more solvent.
The document also discusses acid-base theories and how strong and weak electrolytes
This document provides an overview of biophysics concepts including solutions, biomolecules, and isotopes. It defines solutions as homogeneous mixtures and classifies them as standard or non-standard. It describes crystalloids and colloids, distinguishing their properties such as size, permeability, and osmotic pressure. Isotopes are defined as atoms of the same element with different atomic weights. Biomedical uses of isotopes include diagnosis using radioisotopes and measurement of bodily processes. Radiation hazards from isotopes include immediate effects like bone marrow depression and delayed effects like carcinogenesis.
A solution is a mixture of two components, a solute and a solvent. The solute is the substance being dissolved and is less abundant, while the solvent does the dissolving and is more abundant. Solutions can become more or less concentrated depending on how much solute is dissolved. Molarity is used to describe concentration and is calculated as moles of solute per liter of solution. Dilutions add water to more concentrated solutions to make them weaker. Mixtures are classified based on particle size and whether they exhibit the Tyndall effect.
Solubility is defined as the amount of solute that can dissolve in a specific amount of solvent at a given temperature. Solubility curves on a graph show the saturation point where any additional solute will not dissolve and instead form crystals. A saturated solution contains all the solute it can hold at a given temperature, while an unsaturated solution can dissolve more solute. A supersaturated solution contains more solute than a saturated solution at the same temperature and is unstable.
This document defines key terms related to solutions and solubility. It explains that a solution is a homogeneous mixture of particles smaller than 2 nm, while a colloid contains larger particles up to 500 nm. A solute is the dissolved substance, and solvent is the major component. The amount of solute needed to form a saturated solution is called the solubility. Solubility depends on temperature and pressure, with most substances being more soluble at higher temperatures and gases more soluble under higher pressure. Common ions and their solubilities in water are also discussed.
This document provides information about solutions and their properties. It defines a solution as a homogeneous mixture of two or more substances and discusses the components of a solution - the solute and solvent. It then describes different types of solutions based on the states of the solute and solvent. The document also explains various methods of expressing the concentration of a solution, such as percentage, molarity, and ppm. It provides examples of calculating concentration. Finally, it discusses properties of solutions like solubility, Henry's law, and colligative properties.
Solutions: types and properties of solutions. Units of concentration, ideal and real
solutions. Henry’s law, distribution of solids between two immiscible liquids, distribution
law. Partition coefficient and solvent extraction.
This document provides an overview of solutions and key solution concepts in chemistry. It defines a solution as a homogeneous mixture of two or more substances distributed at the molecular or ionic level. The main components of a solution are the solute, which is the dissolved substance, and the solvent, which does the dissolving and is present in greater quantity. The document discusses different types of solutions, factors that influence solubility such as polarity and temperature, and phenomena involving solutions like boiling point elevation and freezing point depression.
The document discusses solutions and solution chemistry. It begins by defining solutions as homogeneous mixtures of two or more pure substances, with the solute dispersed uniformly throughout the solvent. It then discusses how solutions form and the energy changes that occur, including the enthalpy changes of separating solute and solvent particles and forming new interactions between them. The rest of the document discusses various factors that affect solubility, such as the nature of the solute and solvent, intermolecular forces, temperature, and pressure. It also covers colligative properties of solutions like vapor pressure lowering, boiling point elevation, freezing point depression, and osmotic pressure.
This document discusses solutions, suspensions, and acids and bases. It defines key terms like solute, solvent, solution, suspension, acid, and base. It describes the properties of solutions like being homogeneous mixtures where the solute particles are evenly mixed and too small to settle out. Suspensions are heterogeneous mixtures where insoluble particles remain visible and can settle out. Factors that affect solubility and dissolving rates are described. Examples of applications in homes and industries are provided. Properties of acids and bases like their tastes and effects on indicators are summarized.
1) A solution is a homogenous mixture of two or more substances combined on a molecular level, with the component in lesser quantity called the solute and the component in greater quantity called the solvent.
2) Solutions can be classified based on the state of the solute and solvent, with the major types relevant to textiles being liquid-liquid, solid-liquid, and solid-solid solutions.
3) The solubility of a solid in a liquid solvent is dependent on temperature, generally increasing with higher temperatures as the intermolecular spaces in the liquid increase, allowing it to dissolve more of the solid.
This document provides an overview of solutions and mixtures. It defines key terms like homogeneous and heterogeneous mixtures, solutes and solvents, concentration, and solubility. It also discusses different units used to measure concentration, including molarity, molality, and percent composition. Methods for separating mixtures like distillation, filtering, and chromatography are also outlined. The document provides examples of calculating concentration using various units and solving stoichiometric problems involving solutions.
This document discusses the chemistry of solutions, including:
- Solutions are formed when a solvent dissolves a solute through solvation. The amount of solute dissolved depends on temperature, pressure, and agitation.
- Solubility is the maximum amount of solute that can dissolve in a given solvent under certain conditions. Higher temperatures generally increase solubility for solid-liquid and gas-liquid solutions, while higher pressures increase gas solubility.
- Concentration refers to the proportion of solute in a solution and can be measured by various units including percentage, molarity, molality, and normality. Colligative properties like boiling point and freezing point depend on concentration.
This is the power point presentation for the students of class XII. This includes: Types of solutions, concentration of solutions, Solution of solid in liquid, solution of gas in liquid: Henry's law, vapour pressure of solutions, Raoult's law, Ideal & non ideal solutions, azeotropic mixtures, Colligative properties - (1) relative lowering of vapour pressure of solution of volatile solute, (2) elevation in boiling point of solution (3) depression in freezing point of solution (4) osmotic pressure, abnormal molar mass of solute, Van't Hoff's factor, numerical problems.
Solutions are homogeneous mixtures of two or more components. Key characteristics of solutions include concentration, vapor pressure, boiling point, freezing point, and osmotic pressure. Concentration, vapor pressure, boiling point elevation, freezing point depression, and osmotic pressure are colligative properties that depend only on the number of solute particles and not their identity. Deviations from ideal behavior are classified as positive or negative. Solutions can form azeotropes with unique boiling points.
The document defines key terms related to solutions and solubility including solute, solvent, miscibility, saturated solutions, and supersaturated solutions. It also describes electrolytes, nonelectrolytes, Raoult's law, and units for expressing concentration like molality and molarity. The document provides fundamental information about the nature and properties of solutions.
The document discusses solutions and solubility. It defines key terms like solute, solvent, and solution. It explains that solutions are homogeneous mixtures where solutes spread evenly throughout solvents on a molecular scale. Solutes can be separated from solutions by evaporation but not filtration. The document also discusses how like dissolves like, with polar solvents dissolving polar and ionic solutes, and nonpolar solvents dissolving nonpolar solutes.
This document provides information on solution chemistry and concepts including:
- Definitions of key terms like solution, solute, and solvent
- The process of dissolution where solvent molecules pull apart solute molecules
- How saturated, supersaturated and concentrated solutions are classified
- Factors that influence solubility like temperature, pressure and nature of solute
- Colligative properties of solutions like vapor pressure lowering, freezing point depression and boiling point elevation that depend on amount of solute.
- Equations to calculate values like molarity, molality and mole fraction in solutions.
A solution is a homogeneous mixture composed of a solute dissolved in a solvent. A solution is formed through solvation, where solvent particles surround solute particles and pull them away from each other. The solubility of a substance depends on factors like temperature, pressure, and the properties of the solute and solvent. Increasing temperature, pressure, surface area, or agitation can increase solubility and the rate of solvation. Concentration refers to the ratio of solute to solvent and affects properties like reaction rates.
This document discusses different methods of expressing the concentration of solutions, including percentage by weight/weight (% w/w), percentage by weight/volume (% w/v), percentage by volume/volume (% v/v), parts per million (ppm), and molarity (M). It provides examples and practice problems for each method. It also covers how dilution affects concentration, standard solutions, primary standards including sodium chloride and potassium dichromate, and common substances that are not primary standards like sulfuric acid and sodium hydroxide.
Gseb class 12 chemistry sem 3 ch 2 solution part 1Saumil Sharma
1) A solution is a homogeneous mixture of two or more substances, where the component present in the largest amount is the solvent. The other components are called solutes.
2) The properties of a solution are uniform throughout and the components are microscopic in size. Solutions can exist in solid, liquid, or gas states depending on the states of the solvent and solute.
3) The concentration of a solution can be expressed in several units including molarity, molality, mass percentage, and parts per million. The solubility of a substance depends on properties of the solute and solvent as well as temperature and pressure.
This document discusses chemistry of solutions. It defines key terms like solute, solvent and solution. It explains that a solution is a homogeneous mixture of two or more substances. The solute is dispersed uniformly throughout the solvent. Factors that affect solubility are also discussed, like temperature, pressure, molecular size and polarity. Henry's law is introduced, which states that the solubility of a gas is directly proportional to its partial pressure.
This document discusses solutions and various concepts related to solutions. It defines solutions as homogeneous dispersions where substances are mixed at the molecular or ionic level. It describes the particle sizes of different types of mixtures and defines key terms like solute, solvent, concentration, and saturation.
The document explains that the dissolving process is dynamic, involving both dissolution and crystallization rates. Solubility depends on factors like the nature of the solute and solvent, temperature, and pressure. Concentration can be described qualitatively or quantitatively using terms like molarity, molality, and mole fraction. Dilution decreases concentration by adding more solvent.
The document also discusses acid-base theories and how strong and weak electrolytes
This document provides an overview of biophysics concepts including solutions, biomolecules, and isotopes. It defines solutions as homogeneous mixtures and classifies them as standard or non-standard. It describes crystalloids and colloids, distinguishing their properties such as size, permeability, and osmotic pressure. Isotopes are defined as atoms of the same element with different atomic weights. Biomedical uses of isotopes include diagnosis using radioisotopes and measurement of bodily processes. Radiation hazards from isotopes include immediate effects like bone marrow depression and delayed effects like carcinogenesis.
A solution is a mixture of two components, a solute and a solvent. The solute is the substance being dissolved and is less abundant, while the solvent does the dissolving and is more abundant. Solutions can become more or less concentrated depending on how much solute is dissolved. Molarity is used to describe concentration and is calculated as moles of solute per liter of solution. Dilutions add water to more concentrated solutions to make them weaker. Mixtures are classified based on particle size and whether they exhibit the Tyndall effect.
Solubility is defined as the amount of solute that can dissolve in a specific amount of solvent at a given temperature. Solubility curves on a graph show the saturation point where any additional solute will not dissolve and instead form crystals. A saturated solution contains all the solute it can hold at a given temperature, while an unsaturated solution can dissolve more solute. A supersaturated solution contains more solute than a saturated solution at the same temperature and is unstable.
This document defines key terms related to solutions and solubility. It explains that a solution is a homogeneous mixture of particles smaller than 2 nm, while a colloid contains larger particles up to 500 nm. A solute is the dissolved substance, and solvent is the major component. The amount of solute needed to form a saturated solution is called the solubility. Solubility depends on temperature and pressure, with most substances being more soluble at higher temperatures and gases more soluble under higher pressure. Common ions and their solubilities in water are also discussed.
This document provides information about solutions and their properties. It defines a solution as a homogeneous mixture of two or more substances and discusses the components of a solution - the solute and solvent. It then describes different types of solutions based on the states of the solute and solvent. The document also explains various methods of expressing the concentration of a solution, such as percentage, molarity, and ppm. It provides examples of calculating concentration. Finally, it discusses properties of solutions like solubility, Henry's law, and colligative properties.
Solutions: types and properties of solutions. Units of concentration, ideal and real
solutions. Henry’s law, distribution of solids between two immiscible liquids, distribution
law. Partition coefficient and solvent extraction.
This document provides an overview of solutions and key solution concepts in chemistry. It defines a solution as a homogeneous mixture of two or more substances distributed at the molecular or ionic level. The main components of a solution are the solute, which is the dissolved substance, and the solvent, which does the dissolving and is present in greater quantity. The document discusses different types of solutions, factors that influence solubility such as polarity and temperature, and phenomena involving solutions like boiling point elevation and freezing point depression.
The document discusses solutions and solution chemistry. It begins by defining solutions as homogeneous mixtures of two or more pure substances, with the solute dispersed uniformly throughout the solvent. It then discusses how solutions form and the energy changes that occur, including the enthalpy changes of separating solute and solvent particles and forming new interactions between them. The rest of the document discusses various factors that affect solubility, such as the nature of the solute and solvent, intermolecular forces, temperature, and pressure. It also covers colligative properties of solutions like vapor pressure lowering, boiling point elevation, freezing point depression, and osmotic pressure.
This document discusses solutions, suspensions, and acids and bases. It defines key terms like solute, solvent, solution, suspension, acid, and base. It describes the properties of solutions like being homogeneous mixtures where the solute particles are evenly mixed and too small to settle out. Suspensions are heterogeneous mixtures where insoluble particles remain visible and can settle out. Factors that affect solubility and dissolving rates are described. Examples of applications in homes and industries are provided. Properties of acids and bases like their tastes and effects on indicators are summarized.
1) A solution is a homogenous mixture of two or more substances combined on a molecular level, with the component in lesser quantity called the solute and the component in greater quantity called the solvent.
2) Solutions can be classified based on the state of the solute and solvent, with the major types relevant to textiles being liquid-liquid, solid-liquid, and solid-solid solutions.
3) The solubility of a solid in a liquid solvent is dependent on temperature, generally increasing with higher temperatures as the intermolecular spaces in the liquid increase, allowing it to dissolve more of the solid.
This document provides an overview of solutions and mixtures. It defines key terms like homogeneous and heterogeneous mixtures, solutes and solvents, concentration, and solubility. It also discusses different units used to measure concentration, including molarity, molality, and percent composition. Methods for separating mixtures like distillation, filtering, and chromatography are also outlined. The document provides examples of calculating concentration using various units and solving stoichiometric problems involving solutions.
This document discusses the chemistry of solutions, including:
- Solutions are formed when a solvent dissolves a solute through solvation. The amount of solute dissolved depends on temperature, pressure, and agitation.
- Solubility is the maximum amount of solute that can dissolve in a given solvent under certain conditions. Higher temperatures generally increase solubility for solid-liquid and gas-liquid solutions, while higher pressures increase gas solubility.
- Concentration refers to the proportion of solute in a solution and can be measured by various units including percentage, molarity, molality, and normality. Colligative properties like boiling point and freezing point depend on concentration.
This document provides an overview of solutions and related concepts in chemistry. It defines key terms like mixtures, solutions, solutes, solvents, concentration, solubility, and factors that affect solubility. It also discusses homogeneous and heterogeneous mixtures, concentration in terms of molarity and percent by mass, and how to perform calculations involving dilution of solutions and solution stoichiometry. The document uses examples and diagrams to illustrate these concepts.
This document provides an overview of solutions and solubility. It defines key terms like solute, solvent, solution, homogeneous mixture, heterogeneous mixture, concentration, saturation, and factors that affect solubility. It also discusses quantitative concepts such as molarity, percent by mass, and how to use stoichiometry to solve for different units in solution reactions. The key information is that a solution is a homogeneous mixture of two or more substances, with the solute dissolving in the solvent, and various physical and chemical factors influence how much solute can dissolve.
This document provides an overview of solutions and solubility. It defines key terms like solute, solvent, solution, homogeneous mixture, heterogeneous mixture, concentration, saturation, and factors that affect solubility. It also discusses quantitative concepts such as molarity, percent by mass, and how to use stoichiometry to calculate amounts in solutions. Specifically, it explains how to calculate amounts of solutes and solvents needed using molarity, percent by mass, and mole ratios from balanced chemical equations.
SOLUTION PPT CHAPTER 2(DONE BY AMAN RAJ CLASS XII-'A'.pptxSonam971503
This document provides an overview of solutions, including definitions of key terms like mixtures, heterogeneous mixtures, homogeneous mixtures, solutions, solutes, and solvents. It discusses different types of solutions like gaseous, liquid, and solid solutions. It also covers topics like concentration, solubility, factors that affect solubility, and the relationship between temperature and solubility. The document explains concepts such as molarity, dilutions, mass percent, and solution stoichiometry. Finally, it briefly introduces vapor pressure, Dalton's law of partial pressures, Raoult's law, ideal and non-ideal solutions, and pressure-composition curves.
This document discusses different types of solutions and concepts related to solutions. It defines heterogeneous and homogeneous mixtures, and notes that solutions are homogeneous mixtures composed of solutes and solvents. It describes factors that affect solubility, such as temperature, particle size, and polarity. The document also discusses concentration in terms of molarity, dilutions, mass percent, and solution stoichiometry. Finally, it covers vapor pressure concepts such as Dalton's law, Raoult's law, mole fraction in the vapor phase, ideal and non-ideal solutions, and positive and negative deviations from ideality.
This document provides a summary of key concepts relating to solutions and solubility. It begins with definitions of mixtures, homogeneous and heterogeneous mixtures, and solutions. It then discusses different types of solutions and factors that affect solubility, such as temperature, particle size, and polarity. The document also covers concentration, saturation, and solubility curves. It introduces the concepts of molarity and calculations involving molarity. Finally, it discusses dilutions and calculations involving mass percent and solution stoichiometry.
This document provides a summary of key concepts relating to solutions and solubility. It begins with definitions of mixtures, homogeneous and heterogeneous mixtures, and solutions. It then discusses different types of solutions and factors that affect solubility, such as temperature, particle size, and polarity. The document also covers concentration, including saturated, unsaturated and supersaturated solutions. It introduces concepts of molarity, dilutions, and calculating concentrations using mass percent. Finally, it discusses using stoichiometry to solve for different units when dealing with solutions and chemical reactions in solutions.
This document provides a summary of key concepts relating to solutions and solubility. It begins with definitions of mixtures, homogeneous and heterogeneous mixtures, and solutions. It then discusses different types of solutions and factors that affect solubility, such as temperature, particle size, and polarity. The document also covers concentration, saturation, and solubility curves. It introduces the concepts of molarity and calculations involving molarity, dilutions, and mass percent. Finally, it discusses using stoichiometry to solve for different units when dealing with solutions and chemical reactions in solutions.
This document provides an overview of key topics in solutions and solubility from a chemistry textbook. It includes 3 sections: [1] an introduction to solutions and factors that influence solubility, such as temperature, pressure, and polarity; [2] different types of solutions (saturated, unsaturated, supersaturated) and how concentration can be expressed; and [3] examples of calculations involving molarity, molality, dilution, and titrations. The document aims to outline the main concepts and equations students need to understand properties and concentrations of solutions.
A document discusses various types of mixtures and solutions. It defines heterogeneous and homogeneous mixtures, and describes solutions as homogeneous mixtures composed of solutes and solvents. The document discusses different types of solutions including gaseous, liquid, and solid solutions. It also covers topics like concentration, molarity, molality, mole fraction, saturation, solubility, and colligative properties. Colligative properties discussed include vapor pressure reduction, boiling point elevation, freezing point depression, and osmotic pressure. Factors affecting solubility and the rate of dissolution are also summarized.
This document provides an overview of solutions and related concepts. It defines heterogeneous and homogeneous mixtures, noting that solutions are homogeneous mixtures composed of solutes and solvents. Key terms discussed include concentration, saturation, solubility factors, and polarity. Solution types include liquid, solid, and gas solutions. Concentration can be expressed using molarity, percent by mass, or molality. Dilutions and solution stoichiometry problems are also reviewed.
The document discusses various topics related to solutions and colligative properties. It defines key terms like solute, solvent, concentration methods. It explains concepts such as Raoult's law, deviations from Raoult's law, ideal and non-ideal solutions. It also covers colligative properties including elevation in boiling point, depression in freezing point, osmotic pressure and lowering of vapour pressure. It discusses abnormal molecular masses that can arise from solute dissociation or association and how the van't Hoff factor can explain this.
This document provides an overview of key topics in General Chemistry II to be covered in weeks 3-4. These include:
1) Expressing the concentration of solutions using various units like percent by mass, molarity, molality, etc.
2) Performing stoichiometric calculations for reactions in solution.
3) Describing how concentration affects colligative properties of solutions.
4) Differentiating colligative properties of nonelectrolyte and electrolyte solutions.
5) Calculating properties like boiling point elevation and freezing point depression from concentration.
This document discusses various topics relating to solutions, including:
- Solutions are homogeneous mixtures of two or more substances where the solute is uniformly dispersed throughout the solvent.
- For a solution to form, the intermolecular forces between solute and solvent particles must be strong enough to overcome those within the pure substances.
- The energy changes during solution formation depend on the enthalpy of separating solute and solvent particles and the new interactions between them.
- Solubility is affected by the similarity between solute and solvent intermolecular forces, temperature, and pressure.
- Colligative properties like boiling point elevation and freezing point depression depend only on the number of solute particles and can be
1) Solutions are homogeneous mixtures of two or more substances, where the solute is dispersed uniformly throughout the solvent.
2) For a solution to form, the intermolecular forces between solute and solvent particles must be strong enough to overcome those within the pure substances.
3) The energetics of dissolving involves breaking interactions within the pure substances and forming new interactions between solute and solvent particles. Even endothermic processes can occur spontaneously if they increase the disorder or entropy of the system.
The document provides information on preparing laboratory solutions, including definitions of key terms and quantitative expressions of solution concentration. Some key points:
- A solution is a homogeneous mixture of two or more components that can vary in composition within limits. It consists of a solvent and solute.
- Concentration of solutions can be expressed quantitatively using physical units like percentages or chemical units like molarity, normality, and molality.
- Molarity is the number of moles of solute per liter of solution. It is calculated by dividing the mass of solute in grams by the molar mass and volume of solution in liters.
- Normality is the number of gram equivalents of
This document discusses solutions and their properties. It defines solutions as homogeneous mixtures of particles made up of a solute dissolved in a solvent. It describes the different types of solutions and factors that affect solubility, such as temperature, molecular size, and polarity. It also discusses concentration in terms of molarity, mass percentage, and volume percentage. Finally, it covers colligative properties of solutions like boiling point elevation and freezing point depression.
* Given: 0.85 g of gas dissolves in 1 L of water at 4 atm
* Let's call the amount that will dissolve at 1 atm = S1
* Using Henry's Law: S1/S2 = P1/P2
* S2 is the amount we want to find at 1 atm
* P1 = 4 atm
* P2 = 1 atm
* S1 = 0.85 g
* Substitute into Henry's Law equation:
* 0.85/S2 = 4/1
* S2 = 0.85 * 1/4 = 0.2125 g
Therefore, the amount that will dissolve in 1 L of water at 1 atm is
This document discusses suffixes and terminology used in medicine. It begins by listing common combining forms used to build medical terms and their meanings. It then defines several noun, adjective, and shorter suffixes and provides their meanings. Examples are given of medical terms built using combining forms and suffixes. The document also examines specific medical concepts in more depth, such as hernias, blood cells, acromegaly, splenomegaly, and laparoscopy.
The document is a chapter from a medical textbook that discusses anatomical terminology pertaining to the body as a whole. It defines the structural organization of the body from cells to tissues to organs to systems. It also describes the body cavities and identifies the major organs contained within each cavity, as well as anatomical divisions of the abdomen and back.
This document is from a textbook on medical terminology. It discusses the basic structure of medical words and how they are built from prefixes, suffixes, and combining forms. Some key points:
- Medical terms are made up of elements including roots, suffixes, prefixes, and combining vowels. Understanding these elements is important for analyzing terms.
- Common prefixes include hypo-, epi-, and cis-. Common suffixes include -itis, -algia, and -ectomy.
- Dozens of combining forms are provided, such as gastro- meaning stomach, cardi- meaning heart, and aden- meaning gland.
- Rules are provided for analyzing terms, such as reading from the suffix backward and dropping combining vowels before suffixes starting with vowels
This document is the copyright information for Chapter 25 on Cancer from the 6th edition of the textbook Molecular Cell Biology published in 2008 by W. H. Freeman and Company. The chapter was authored by a team that includes Lodish, Berk, Kaiser, Krieger, Scott, Bretscher, Ploegh, and Matsudaira.
This document is the copyright information for Chapter 24 on Immunology from the 6th edition of the textbook Molecular Cell Biology published in 2008 by W. H. Freeman and Company. The chapter was authored by Lodish, Berk, Kaiser, Krieger, Scott, Bretscher, Ploegh, and Matsudaira.
Nerve cells, also known as neurons, are highly specialized cells that process and transmit information through electrical and chemical signals. This chapter discusses the structure and function of neurons, how they communicate with each other via synapses, and how signals are propagated along neurons through changes in their membrane potentials. Neurons play a vital role in the nervous system by allowing organisms to process information and coordinate their responses.
This document is the copyright information for Chapter 22 from the 6th edition of the textbook "Molecular Cell Biology" published in 2008 by W. H. Freeman and Company. The chapter is titled "The Molecular Cell Biology of Development" and is authored by Lodish, Berk, Kaiser, Krieger, Scott, Bretscher, Ploegh, and Matsudaira.
This document is the copyright information for Chapter 21 from the sixth edition of the textbook "Molecular Cell Biology" published in 2008 by W. H. Freeman and Company. The chapter is titled "Cell Birth, Lineage, and Death" and is authored by Lodish, Berk, Kaiser, Krieger, Scott, Bretscher, Ploegh, and Matsudaira.
This document is the copyright page for Chapter 20 from the 6th edition of the textbook "Molecular Cell Biology" published in 2008 by W. H. Freeman and Company. The chapter is titled "Regulating the Eukaryotic Cell Cycle" and is authored by a group of scientists including Lodish, Berk, Kaiser, Krieger, Scott, Bretscher, Ploegh, and Matsudaira.
This document is the copyright information for Chapter 19 from the 6th edition textbook "Molecular Cell Biology" published in 2008 by W. H. Freeman and Company. The chapter is titled "Integrating Cells into Tissues" and is authored by Lodish, Berk, Kaiser, Krieger, Scott, Bretscher, Ploegh, and Matsudaira.
This chapter discusses microtubules and intermediate filaments, which are types of cytoskeletal filaments that help organize and move cellular components. Microtubules are involved in processes like cell division and intracellular transport, while intermediate filaments provide mechanical strength and help integrate the nucleus with the cytoplasm. Together, these filaments play important structural and functional roles in eukaryotic cells.
This chapter discusses microfilaments, which are one of the three main types of cytoskeletal filaments found in eukaryotic cells. Microfilaments are composed of actin filaments and play important roles in cell motility, structure, and intracellular transport. They allow cells to change shape and to move by contracting or extending parts of the cell surface.
This document is the copyright page for Chapter 16 from the 6th edition of the textbook "Molecular Cell Biology" published in 2008 by W. H. Freeman and Company. The chapter is titled "Signaling Pathways that Control Gene Activity" and is authored by a group of scientists including Lodish, Berk, Kaiser, Krieger, Scott, Bretscher, Ploegh and Matsudaira.
This document is the copyright page for Chapter 15 of the 6th edition textbook "Molecular Cell Biology" by Lodish, Berk, Kaiser, Krieger, Scott, Bretscher, Ploegh, and Matsudaira. It provides the chapter title "Cell Signaling I: Signal Transduction and Short-Term Cellular Responses" and notes the copyright is held by W. H. Freeman and Company in 2008.
This document is the copyright page for Chapter 14 from the 6th edition textbook "Molecular Cell Biology" published in 2008 by W. H. Freeman and Company. The chapter is titled "Vesicular Traffic, Secretion, and Endocytosis" and is authored by a group of scientists including Lodish, Berk, Kaiser, Krieger, Scott, Bretscher, Ploegh and Matsudaira.
This chapter discusses how proteins are transported into membranes and organelles within cells. Proteins destined for membranes or organelles have targeting signals that are recognized by transport systems. The transport systems then direct the proteins to their proper destinations, such as inserting membrane proteins into membranes or delivering soluble proteins into organelles.
This document is the copyright information for Chapter 12 from the sixth edition of the textbook "Molecular Cell Biology" published in 2008 by W. H. Freeman and Company. The chapter is titled "Cellular Energetics" and is authored by Lodish, Berk, Kaiser, Krieger, Scott, Bretscher, Ploegh, and Matsudaira.
This chapter discusses the transmembrane transport of ions and small molecules across cell membranes. It covers topics such as passive transport through membrane channels and pumps, as well as active transport using ATP. The chapter is from the 6th edition of the textbook Molecular Cell Biology and is copyrighted by W. H. Freeman and Company in 2008.
This document is the copyright information for Chapter 10, titled "Biomembrane Structure", from the sixth edition of the textbook "Molecular Cell Biology" published in 2008 by W. H. Freeman and Company. The chapter was written by a team of authors including Lodish, Berk, Kaiser, Krieger, Scott, Bretscher, Ploegh and Matsudaira.
This document is the copyright information for Chapter 9 from the 6th edition of the textbook "Molecular Cell Biology" published in 2008 by W. H. Freeman and Company. The chapter is titled "Visualizing, Fractionating, and Culturing Cells" and is authored by Lodish, Berk, Kaiser, Krieger, Scott, Bretscher, Ploegh, and Matsudaira.
A review of the growth of the Israel Genealogy Research Association Database Collection for the last 12 months. Our collection is now passed the 3 million mark and still growing. See which archives have contributed the most. See the different types of records we have, and which years have had records added. You can also see what we have for the future.
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...PECB
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Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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This presentation was provided by Steph Pollock of The American Psychological Association’s Journals Program, and Damita Snow, of The American Society of Civil Engineers (ASCE), for the initial session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session One: 'Setting Expectations: a DEIA Primer,' was held June 6, 2024.
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
বাংলাদেশের অর্থনৈতিক সমীক্ষা ২০২৪ [Bangladesh Economic Review 2024 Bangla.pdf] কম্পিউটার , ট্যাব ও স্মার্ট ফোন ভার্সন সহ সম্পূর্ণ বাংলা ই-বুক বা pdf বই " সুচিপত্র ...বুকমার্ক মেনু 🔖 ও হাইপার লিংক মেনু 📝👆 যুক্ত ..
আমাদের সবার জন্য খুব খুব গুরুত্বপূর্ণ একটি বই ..বিসিএস, ব্যাংক, ইউনিভার্সিটি ভর্তি ও যে কোন প্রতিযোগিতা মূলক পরীক্ষার জন্য এর খুব ইম্পরট্যান্ট একটি বিষয় ...তাছাড়া বাংলাদেশের সাম্প্রতিক যে কোন ডাটা বা তথ্য এই বইতে পাবেন ...
তাই একজন নাগরিক হিসাবে এই তথ্য গুলো আপনার জানা প্রয়োজন ...।
বিসিএস ও ব্যাংক এর লিখিত পরীক্ষা ...+এছাড়া মাধ্যমিক ও উচ্চমাধ্যমিকের স্টুডেন্টদের জন্য অনেক কাজে আসবে ...
The simplified electron and muon model, Oscillating Spacetime: The Foundation...RitikBhardwaj56
Discover the Simplified Electron and Muon Model: A New Wave-Based Approach to Understanding Particles delves into a groundbreaking theory that presents electrons and muons as rotating soliton waves within oscillating spacetime. Geared towards students, researchers, and science buffs, this book breaks down complex ideas into simple explanations. It covers topics such as electron waves, temporal dynamics, and the implications of this model on particle physics. With clear illustrations and easy-to-follow explanations, readers will gain a new outlook on the universe's fundamental nature.
How to Build a Module in Odoo 17 Using the Scaffold MethodCeline George
Odoo provides an option for creating a module by using a single line command. By using this command the user can make a whole structure of a module. It is very easy for a beginner to make a module. There is no need to make each file manually. This slide will show how to create a module using the scaffold method.
2. 6.1 Properties of Solutions
• Solution - homogeneous mixture
• Solute - the substance in the mixture present
in lesser quantity
• Solvent - the substance present in the largest
quantity
• Aqueous solution - solution where the
solvent is water
• Solutions can be liquids as well as solids and
gases
3. Examples of Solutions
• Air - oxygen and several trace gases are
dissolved in the gaseous solvent, nitrogen
• Alloys - brass and other homogeneous
metal mixtures in the solid state
• Focus on liquid solutions as many important
chemical reactions take place in liquid
solutions
6.1PropertiesofSolutions
4. • Clear, transparent, no visible particles
• May have color
• Electrolytes are formed from solutes that are
soluble ionic compounds
• Nonelectrolytes do not dissociate
• Volumes of solute and solvent are not additive
– 1 L ethanol + 1 L water does not give 2 L of solution
6.1PropertiesofSolutions
)(-Cl)(Na)NaCl( OH2
aqaqs +→ +
General Properties of Liquid
Solutions
5. 6.1PropertiesofSolutions
Solutions and Colloids
• Colloidal suspension - contains solute
particles which are not uniformly
distributed
– Due to larger size of particles (1nm - 200 nm)
– Appears identical to solution from the
naked eye
– Smaller than 1 nm, have solution
– Larger than 1 nm, have a precipitate
6. 6.1PropertiesofSolutions Degree of Solubility
• Solubility - how much of a particular solute can
dissolve in a certain solvent at a specified
temperature
• Factors which affect solubility:
1 Polarity of solute and solvent
• The more different they are, the lower the solubility
2 Temperature
• Increase in temperature usually increases solubility
3 Pressure
• Usually has no effect
• If solubility is of gas in liquid, directly proportional
to applied pressure
7. 6.1PropertiesofSolutions Saturation
• Saturated solution - a solution that contains all the
solute that can be dissolved at a particular
temperature
• Supersaturated solution - contains more solute
than can be dissolved at the current temperature
• How is this done?
• Heat solvent, saturate it with solute then cool slowly
• Sometimes the excess will precipitate out
• If it doesn’t precipitate, the solution will be
supersaturated
8. 6.1PropertiesofSolutions Solubility and Equilibrium
• If excess solute is added to a solvent, some
dissolves
• At first, rate of dissolution is large
• Later, reverse reaction – precipitation – occurs
more quickly
• When equilibrium is reached the rates of
dissolution and precipitation are equal, there is
some dissolved and some undissolved solute
• A saturated solution is an example of a dynamic
equilibrium
9. 6.1PropertiesofSolutions Solubility of Gases: Henry’s Law
• Henry’s law – the number of moles of a gas
dissolved in a liquid at a given temperature is
proportional to the partial pressure of the gas
above the liquid
• Gas solubility in a liquid is directly proportional to
the pressure of the gas in the atmosphere in
contact with the liquid
• Gases are most soluble at low temperatures
• Solubility decreases significantly at higher
temperatures
– Carbonated beverages – CO2 solubility less when warm
– Respiration – facilitates O2 and CO2 exchange in lungs
10. 6.2 Concentration Based on Mass
• Concentration - amount of solute dissolved
in a given amount of solution
• Concentration of a solution has an effect on
– Physical properties
• Melting and boiling points
– Chemical properties
• Solution reactivity
6
11. • Amount of solute = mass of solute in grams
• Amount of solution = volume in milliliters
• Express concentration as a percentage by
multiplying ratio by 100% = weight/volume
percent or % (W/V)
%100
solutionofsmilliliter
soluteofgrams
V
W
% ×=
solutionofamount
soluteofamount
ionconcentrat =
Weight/Volume Percent
6.2ConcentrationBasedon
Mass
13. 6.2ConcentrationBasedon
Mass
Calculate Weight of Solute from
Weight/Volume Percent
Calculate the number of grams of glucose in
7.50 x 102
mL of a 15.0% solution
15.0% (W/V) = Xg glucose/7.50 x 102
mL x 100%
Xg glucose x 100% = (15.0% W/V)(7.50 x 102
mL)
Xg glucose = 113 g glucose
%100
solutionofsmilliliter
soluteofgrams
V
W
% ×=
15. 6.3 Concentration of Solutions:
Moles and Equivalents
• Chemical equations represent the relative
number of moles of reactants producing
products
• Many chemical reactions occur in solution
where it is most useful to represent
concentrations on a molar basis
16. • The most common mole-based
concentration unit is molarity
• Molarity
– Symbolized M
– Defined as the number of moles of solute per
liter of solution
Molarity6.3MolesandEquivalents
solutionL
solutemoles
=M
17. • Calculate the molarity of 2.0 L of
solution containing 5.0 mol NaOH
• Use the equation
• Substitute into the equation:
MNaOH = 5.0 mol solute
2.0 L solution
= 2.5 M
Calculating Molarity from Moles6.3MolesandEquivalents
solutionL
solutemoles
=M
18. • If 5.00 g glucose are dissolved in 1.00 x 102
mL of
solution, calculate molarity, M, of the glucose solution
• Convert from g glucose to moles glucose
– Molar mass of glucose = 1.80 x 102
g/mol
5.00 g x 1 mol / 1.80 x 102
g = 2.78 x 10-2
mol glucose
– Convert volume from mL to L
1.00 x 102
mL x 1 L / 103
mL = 1.00 x 10-1
L
• Substitute into the equation:
Mglucose = 2.78 x 10-2
mol glucose
1.00 x 10-1
L solution
= 2.78 x 10-1
M
Calculating Molarity From Mass6.3MolesandEquivalents
solutionL
solutemoles
=M
19. solutionL
solutemoles
=M
6.3MolesandEquivalents Dilution
Dilution is required to prepare a less
concentrated solution from a more
concentrated one
– M1 = molarity of solution before dilution
– M2 = molarity of solution after dilution
– V1 = volume of solution before dilution
– V2 = volume of solution after dilution
moles solute = (M)(L solution)
20. • In a dilution will the
number of moles of solute
change?
– No, only fewer per unit
volume
• So,
• Knowing any three terms
permits calculation of the
fourth
M1V1 = M2V2
6.3MolesandEquivalents Dilution
21. • Calculate the molarity of a solution made by
diluting 0.050 L of 0.10 M HCl solution to a
volume of 1.0 L
– M1 = 0.10 M molarity of solution before dilution
– M2 = X M molarity of solution after dilution
– V1 = 0.050 L volume of solution before dilution
– V2 = 1.0 L volume of solution after dilution
• Use dilution expression
• X M = (0.10 M) (0.050 L) / (1.0 L)
0.0050 M HCl OR 5.0 x 10-3
M HCl
M1V1 = M2V2
6.3MolesandEquivalents Calculating Molarity
After Dilution
22. 6.3MolesandEquivalents Representation of Concentration
of Ions in Solution
Two common ways of expressing
concentration of ions in solution:
1. Moles per liter (molarity)
• Molarity emphasizes the number of
individual ions
2. Equivalents per liter (eq/L)
• Emphasis on charge
24. 6.3MolesandEquivalents Molarity vs. Equivalents – 1 M Na3PO4
• 1 mol Na+
= 1 equivalent Na+
• 1 mol PO4
3-
= 3 equivalents PO4
3-
• Equivalents of Na+
?
– 3 mol Na+
= 3 equivalents of Na+
• Equivalents of PO4
3-
?
– 1 mol PO4
3-
= 3 equivalents of PO4
3-
25. 6.3MolesandEquivalents Calculating Ion Concentration
• Calculate eq/L of phosphate ion, PO4
3-
in a
solution with 5.0 x 10-3
M phosphate
• Need to use two conversion factors:
– mol PO4
3-
mol charge
– mol charge eq PO4
3
5.0 x 10-3
mol PO4
3-
x 3 mol charge x 1 eq
1 L 1 mol PO4
3-
1mol charge
• 1.5 x 10-2
eq PO4
3-
/L
26. 6.4 Concentration-Dependent
Solution Properties
• Colligative properties - properties of
solutions that depend on the concentration
of the solute particles, rather than the
identity of the solute
• Four colligative properties of solutions
1. vapor pressure lowering
2. boiling point elevation
3. freezing point depression
4. osmotic pressure
27. Vapor Pressure of a Liquid
Consider Raoult’s law in molecular
terms
• Vapor pressure of a solution
results from escape of solvent
molecules from liquid to gas
phase
• Partial pressure of gas phase
solvent molecules increases
until equilibrium vapor
pressure is reached
• Presence of solute molecules
hinders escape of solvent
molecules, lowering
equilibrium vapor pressure
6.4Concentration-Dependent
SolutionProperties
28. 6.4Concentration-Dependent
SolutionProperties
Vapor Pressure Lowering
• Raoult’s law - when a nonvolatile solute is
added to a solvent, vapor pressure of the solvent
decreases in proportion to the concentration of
the solute
• Solute molecules (red below) serve as a barrier to
the escape of solvent molecules resulting in a
decrease in the vapor pressure
29. 6.4Concentration-Dependent
SolutionProperties
Freezing Point Depression and
Boiling Point Elevation
• Freezing point depression may be explained
considering the equilibrium between solid and
liquid states
– Solute molecules interfere with the rate at which
liquid water molecules associate to form the solid
state
• Boiling point elevation can be explained
considering the definition as the temperature at
which vapor pressure of the liquid equals the
atmospheric pressure
– If a solute is present, then the increase in boiling
temperature is necessary to raise the vapor pressure
to atmospheric temperature
30. • Freezing point depression (∆Tf) - is proportional
to the number of solute particles
– Solute particles, not just solute
• How does an electrolyte behave?
– Dissociate into ions
• An equal concentration of NaCl will affect the
freezing point twice as much as glucose (a
nonelectrolyte)
• Each solvent has a unique freezing point
depression constant or proportionality factor
∆Tf=kf m
6.4Concentration-Dependent
SolutionProperties
Freezing Point Depression
31. • Boiling point elevation (∆Tb) - is
proportional to the number of solute
particles
• An electrolyte will affect boiling point to
a greater degree than a nonelectrolyte of
the same concentration
• Each solvent has a unique boiling point
elevation constant
∆Tb=kb m
6.4Concentration-Dependent
SolutionProperties
Boiling point elevation
32. Osmotic Pressure
• Some types of membranes appear impervious
to matter, but actually have a network of small
holes called pores
• These pores may be large enough to permit
small solvent molecules to move from one side
of the membrane to the other
• Solute molecules cannot cross the membrane as
they are too large
• Semipermeable membrane - allows
solvent but not solute to diffuse from one side
to another
6.4Concentration-Dependent
SolutionProperties
34. • Osmotic pressure (π) - the amount of
pressure required to stop the flow across
a semipermeable membrane
• Osmolarity - the molarity of particles in
solution
– Osmol, used for osmotic pressure
calculation
π=MRT
6.4Concentration-Dependent
SolutionProperties
Osmotic Pressure
35. 6.4Concentration-Dependent
SolutionProperties
Tonicity and the Cell
• Living cells contain aqueous solution and these cells
are also surrounded by aqueous solution
• Cell function requires maintenance of the same osmotic
pressure inside and outside the cell
• Solute concentration of fluid surrounding cells higher
than inside results in a hypertonic solution causing
water to flow into the surroundings, causing collapse =
crenation
• Solute concentration of fluid surrounding cells too low,
results in a hypotonic solution causing water to flow
into the cell, causing rupture = hemolysis
• Isotonic solutions have identical osmotic pressures and
no osmotic pressure difference across the cell
membrane
37. Pickling Cucumber in Hypertonic
Brine Due to Osmosis
6.4Concentration-Dependent
SolutionProperties
38. 6.5 Water as a Solvent
• Water is often referred to as the “universal
solvent”
• Excellent solvent for polar molecules
• Most abundant liquid on earth
• 60% of the human body is water
– transports ions, nutrients, and waste into and out of
cells
– solvent for biochemical reactions in cells and
digestive tract
– reactant or product in some biochemical processes