Water is called the universal solvent because it dissolves many solutes. Ionic compounds dissolve through attractions between water molecules and ions, separating the crystal lattice. Molecular compounds dissolve as water molecules arrange around the solute according to polarity. Solubility depends on temperature and chemistry - polar solvents dissolve polar solutes. Adding solute increases the boiling point and decreases the freezing point of solvents by interfering with molecular arrangements.
Factors Affecting Solubility and Rate of Dissolution
Solubility
is the ability of a substance to be dissolved in another substance at a specific temperature and pressure.
It is also defined as the maximum amount of solute that can be dissolved in a given amount of solvent at a specified temperature and pressure to produce a solution in equilibrium.
It is usually expressed in grams of solute per milliliters of solvent.
Factors Affecting Solubility
1. Nature of Solute and Solvent
A solute can only be dissolved in a solvent when they are “alike.” A general rule is “like dissolves like.”
2. Temperature
The solubility of a solid and liquid solute increases when temperature is increased.
The solubility of a gaseous solute to a liquid solvent decreases as temperature increases.
3. Pressure
The effect of pressure is only applicable for the solubility of gases in liquids. The higher the pressure of a gas, the more soluble it is.
Rate of Dissolution
The rate of dissolution is defined as how fast a solute dissolves in a given solvent at a specific temperature. The process of dissolving a solute is called dissolution.
Factors Affecting the Rate of Dissolution
1. Stirring
Stirring a solute will increase its rate of dissolution. When you stir, solute particles come into closer contact more often with solvent particles.
2. Size of the solute particle
The smaller the particles of the solute, the faster it dissolves in the solvent. Small particles provide larger surface area for contact with the solvent.
3. Temperature
As temperature increases, the rate of dissolution of solid and liquid solutes also increases.
4. Amount of solute present in a solution
When you have little amount of solute in the solution, it is easier to dissolve the same solute in the given solvent. However, when you have a lot of solute already present in the solvent, dissolution takes slowly.
Introduces the concepts involved in predicting whether substances are soluble or insoluble. Precipitation (exchange) reactions are also discussed, along with ionic equations and net ionic equations. General Chemistry
Factors Affecting Solubility and Rate of Dissolution
Solubility
is the ability of a substance to be dissolved in another substance at a specific temperature and pressure.
It is also defined as the maximum amount of solute that can be dissolved in a given amount of solvent at a specified temperature and pressure to produce a solution in equilibrium.
It is usually expressed in grams of solute per milliliters of solvent.
Factors Affecting Solubility
1. Nature of Solute and Solvent
A solute can only be dissolved in a solvent when they are “alike.” A general rule is “like dissolves like.”
2. Temperature
The solubility of a solid and liquid solute increases when temperature is increased.
The solubility of a gaseous solute to a liquid solvent decreases as temperature increases.
3. Pressure
The effect of pressure is only applicable for the solubility of gases in liquids. The higher the pressure of a gas, the more soluble it is.
Rate of Dissolution
The rate of dissolution is defined as how fast a solute dissolves in a given solvent at a specific temperature. The process of dissolving a solute is called dissolution.
Factors Affecting the Rate of Dissolution
1. Stirring
Stirring a solute will increase its rate of dissolution. When you stir, solute particles come into closer contact more often with solvent particles.
2. Size of the solute particle
The smaller the particles of the solute, the faster it dissolves in the solvent. Small particles provide larger surface area for contact with the solvent.
3. Temperature
As temperature increases, the rate of dissolution of solid and liquid solutes also increases.
4. Amount of solute present in a solution
When you have little amount of solute in the solution, it is easier to dissolve the same solute in the given solvent. However, when you have a lot of solute already present in the solvent, dissolution takes slowly.
Introduces the concepts involved in predicting whether substances are soluble or insoluble. Precipitation (exchange) reactions are also discussed, along with ionic equations and net ionic equations. General Chemistry
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.
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Enterprise Excellence is Inclusive Excellence.pdfKaiNexus
Enterprise excellence and inclusive excellence are closely linked, and real-world challenges have shown that both are essential to the success of any organization. To achieve enterprise excellence, organizations must focus on improving their operations and processes while creating an inclusive environment that engages everyone. In this interactive session, the facilitator will highlight commonly established business practices and how they limit our ability to engage everyone every day. More importantly, though, participants will likely gain increased awareness of what we can do differently to maximize enterprise excellence through deliberate inclusion.
What is Enterprise Excellence?
Enterprise Excellence is a holistic approach that's aimed at achieving world-class performance across all aspects of the organization.
What might I learn?
A way to engage all in creating Inclusive Excellence. Lessons from the US military and their parallels to the story of Harry Potter. How belt systems and CI teams can destroy inclusive practices. How leadership language invites people to the party. There are three things leaders can do to engage everyone every day: maximizing psychological safety to create environments where folks learn, contribute, and challenge the status quo.
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Dr. William Harvey is a seasoned Operations Leader with extensive experience in chemical processing, manufacturing, and operations management. At Michelman, he currently oversees multiple sites, leading teams in strategic planning and coaching/practicing continuous improvement. William is set to start his eighth year of teaching at the University of Cincinnati where he teaches marketing, finance, and management. William holds various certifications in change management, quality, leadership, operational excellence, team building, and DiSC, among others.
Memorandum Of Association Constitution of Company.pptseri bangash
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A Memorandum of Association (MOA) is a legal document that outlines the fundamental principles and objectives upon which a company operates. It serves as the company's charter or constitution and defines the scope of its activities. Here's a detailed note on the MOA:
Contents of Memorandum of Association:
Name Clause: This clause states the name of the company, which should end with words like "Limited" or "Ltd." for a public limited company and "Private Limited" or "Pvt. Ltd." for a private limited company.
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Registered Office Clause: It specifies the location where the company's registered office is situated. This office is where all official communications and notices are sent.
Objective Clause: This clause delineates the main objectives for which the company is formed. It's important to define these objectives clearly, as the company cannot undertake activities beyond those mentioned in this clause.
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Liability Clause: It outlines the extent of liability of the company's members. In the case of companies limited by shares, the liability of members is limited to the amount unpaid on their shares. For companies limited by guarantee, members' liability is limited to the amount they undertake to contribute if the company is wound up.
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Capital Clause: This clause specifies the authorized capital of the company, i.e., the maximum amount of share capital the company is authorized to issue. It also mentions the division of this capital into shares and their respective nominal value.
Association Clause: It simply states that the subscribers wish to form a company and agree to become members of it, in accordance with the terms of the MOA.
Importance of Memorandum of Association:
Legal Requirement: The MOA is a legal requirement for the formation of a company. It must be filed with the Registrar of Companies during the incorporation process.
Constitutional Document: It serves as the company's constitutional document, defining its scope, powers, and limitations.
Protection of Members: It protects the interests of the company's members by clearly defining the objectives and limiting their liability.
External Communication: It provides clarity to external parties, such as investors, creditors, and regulatory authorities, regarding the company's objectives and powers.
https://seribangash.com/difference-public-and-private-company-law/
Binding Authority: The company and its members are bound by the provisions of the MOA. Any action taken beyond its scope may be considered ultra vires (beyond the powers) of the company and therefore void.
Amendment of MOA:
While the MOA lays down the company's fundamental principles, it is not entirely immutable. It can be amended, but only under specific circumstances and in compliance with legal procedures. Amendments typically require shareholder
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Unveiling the Secrets How Does Generative AI Work.pdfSam H
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2. Water – The Universal Solvent
•Many solutions have water as
the solvent.
•These solutions are called an
aqueous solution.
•Water dissolves many solutes
and so scientists call it the
universal solvent.
•Why is water such a great
solvent? Let’s find out.
16. Like Dissolves Like
•Polar solvents will dissolve polar solutes.
•Nonpolar solvents will dissolve nonpolar
solutes.
•Polar will not dissolves nonpolar and vice versa.
•Think about oil and water. Is the oil polar or
nonpolar?
18. How Much Will
Dissolve?
•If you tried to dissolve a lot of sugar in a small glass
of water, not all of the sugar would dissolve.
•Solubility is the measurement of how much
solute dissolves in a given amount of solvent.
•Solubility is usually describes as how much can
dissolve in 100g of solvent at a given temperature.
19. Solubility
in a
Liquid-Solid
Solution
Temperature is
included here
because the
solubility of a
solute changes as
the temperature of
the solvent
changes.
20. Solubility
in a
Liquid-Solid
Solution
As you heat
water, you can
dissolve sugar in
water faster rate,
but also more
sugar will
dissolve.
21. Solubility
in a
Liquid-Gas
Solution
In a liquid-gas solution,
the opposite is true.
As the temperature
increases, the solubility
decreases.
22. Solubility
in a
Liquid-Gas
Solution
This is because the
water molecules will
be moving faster at
higher temperatures.
This movement will
bump the gas out of
the solution, therefore
decreases solubility.
23. Saturated Solutions
•If you add calcium
carbonate to 100g of water
at 25˚C, only 0.0014g will
dissolve. No more can
dissolve.
•This solution is called a
saturated solution.
•If the solution was a liquid-
solid solution, the extra solid
would settle on the bottom
of the container.
24. Saturated Solutions
•The solubility of sugar in 100g of water at
25˚C is 204g.
•If you had a solution with 50g of sugar in 100g
of water, the solution is called unsaturated.
More solute could dissolve.
25. Saturated Solutions
•A hot solvent can
usually hold more
solute then a
cooler one.
•If a saturated
solution cools, some
of the solute can fall
out of the solution.
26.
27. Saturated Solutions
•A hot solvent can usually hold more solute then
a cooler one.
•If a saturated solution cools, some of the solute
can fall out of the solution.
• But if the solution is cooled slowly,
sometimes the excess solute remains dissolved for
a period of time. This solution is called
supersaturated.
28. Rate of Dissolving
•Solubility does not tell you how fast a solute will
dissolve.
•Some solutes will dissolve quickly, others take a long time
to dissolve.
•A solution dissolves faster when:
✴it is stirred
✴it is shaken
✴the temperature is increased
•How exactly do these factors help?
✴They increase the rate at which the surfaces of the
solute come into contact with the solvent.
✴Increasing the area of contact between the solute
and the solvent can also increase the rate of
dissolving
29. Concentrated!
•The concentration of a solution tells you how
much solute is present compared to the amount of
solvent.
•When you are comparing the concentrations of
two solutions with the same type of solute and
solvent, you can use a simple description such as:
dilute or concentrated.
30. Concentrated!
•The Dead Sea is
5+ times saltier than
Earth's oceans. As
water evaporates,
salt is left behind.
When the
saturation point is
reached, the salt
forms these pillars.
31. Measuring
Concentrations
•One way to give the
concentration is by using the
percentage of the volume
of the solution that is made
up of the solute.
32. Effects on Solute Particles
•Solute particles affect the physical properties
of the solvent, such as the boiling point or the
freezing point.
33. Effects on Solute Particles
•Adding a solute, such as NaCl, changes the way
the water molecules can arrange themselves. The
solute gets in the way.
34. Effects on Solute Particles
•To overcome this interference of the solute, a
lower temperature is needed for the solvent to
freeze.
35. Effects on Solute Particles
•When a solvent begins to boil, the solvent
molecules are gaining enough energy to move
from the liquid state to the gaseous state.
36. Effects on Solute Particles
•When a solute is introduced, its particles
interfere with the evaporation of the solvent
particles.
37. Effects on Solute Particles
•For water and NaCl, the NaCl will block the
H2O from escaping the liquid and becoming a
gas.
38. Effects on Solute Particles
•More energy is needed for the solvent
particles to escape from the liquid, and the
boiling point of the solution will be higher.