This experiment determines the percentage of iron in a sample through a redox titration between the iron sample and potassium permanganate (KMnO4). The reaction involves the oxidation of Fe2+ ions in the iron sample by MnO4- ions from the KMnO4 solution. For every 5 moles of Fe2+ ions oxidized, 1 mole of MnO4- ions is reduced. The moles of MnO4- ions used in the titration allows calculation of the moles of Fe2+ ions and hence the mass of iron in the original sample. An initial titration of KMnO4 solution against oxalic acid, a primary standard, is required to determine the exact molar
This document describes how to determine the percentage of iron in a sample through a redox titration with potassium permanganate (KMnO4). It provides background on redox titrations and oxidation-reduction reactions. KMnO4 is first standardized against oxalic acid, since its concentration decreases over time. This allows the moles of KMnO4 used to be determined. The reaction of KMnO4 with Fe2+ is then used to find the moles of Fe2+ in the sample. From this, the mass and percentage of iron can be calculated.
The document discusses oxidation-reduction (redox) reactions and oxidation numbers. It provides examples of half reactions and full redox reactions formed by combining half reactions. Oxidation involves an increase in oxidation state through loss of electrons, while reduction involves a decrease in oxidation state through gain of electrons. The species donating electrons is the reducing agent, while the species gaining electrons is the oxidizing agent.
Reduction - Oxidation Titrations Theory and Application.pptAbdelrhman abooda
This document discusses redox (oxidation-reduction) titrations. It begins by defining redox reactions and key terms like oxidizing agent and reducing agent. It then discusses oxidation numbers and how to calculate them. Several examples of oxidation numbers are provided. The document also covers balancing redox reactions using the half-reaction method. Factors that affect oxidation potential are explained, including common ions, pH, complexing agents, and precipitating agents. Standard reduction potentials of various redox couples are presented. Finally, the shape of a typical redox titration curve is briefly described.
This document defines key terms related to redox reactions and oxidation states. It discusses oxidation and reduction in terms of electron transfer and changes in oxidation state. Oxidation involves the loss of electrons and an increase in oxidation state, while reduction involves the gain of electrons and a decrease in oxidation state. The document also covers how to calculate oxidation states and provides examples of balancing redox reactions.
The document provides information about a chemistry problem involving the molecular weight of a compound. A 3.41 x 10-6 g sample of the compound contains 4.67 x 10^16 molecules. Calculating the molecular weight based on the moles of molecules and mass of the sample gives a value of 44.0 g/mole. Of the compounds listed, CO2 has a molecular weight that matches this value.
This document discusses oxidation and reduction reactions and oxidation numbers. It provides rules for assigning oxidation numbers to elements in compounds and examples of using the rules to determine oxidation numbers. The key points are:
- Oxidation involves losing electrons and reduction involves gaining electrons.
- Oxidation numbers are assigned based on arbitrary rules and are not actual charges.
- Common rules include main group elements having an oxidation state of 0 in their elemental form, monoatomic ions having the same charge as their oxidation number, and the sum of oxidation numbers in a compound or polyatomic ion equaling the overall charge.
The document discusses oxidation and reduction reactions. It provides examples of oxidation as the loss of electrons and reduction as the gain of electrons. Corrosion is described as an oxidation reaction where metals react with substances like oxygen, water and acids. Electroplating is introduced as a process where a thin coating of a metal like copper or nickel is deposited onto a surface through an oxidation-reduction reaction.
This document describes how to determine the percentage of iron in a sample through a redox titration with potassium permanganate (KMnO4). It provides background on redox titrations and oxidation-reduction reactions. KMnO4 is first standardized against oxalic acid, since its concentration decreases over time. This allows the moles of KMnO4 used to be determined. The reaction of KMnO4 with Fe2+ is then used to find the moles of Fe2+ in the sample. From this, the mass and percentage of iron can be calculated.
The document discusses oxidation-reduction (redox) reactions and oxidation numbers. It provides examples of half reactions and full redox reactions formed by combining half reactions. Oxidation involves an increase in oxidation state through loss of electrons, while reduction involves a decrease in oxidation state through gain of electrons. The species donating electrons is the reducing agent, while the species gaining electrons is the oxidizing agent.
Reduction - Oxidation Titrations Theory and Application.pptAbdelrhman abooda
This document discusses redox (oxidation-reduction) titrations. It begins by defining redox reactions and key terms like oxidizing agent and reducing agent. It then discusses oxidation numbers and how to calculate them. Several examples of oxidation numbers are provided. The document also covers balancing redox reactions using the half-reaction method. Factors that affect oxidation potential are explained, including common ions, pH, complexing agents, and precipitating agents. Standard reduction potentials of various redox couples are presented. Finally, the shape of a typical redox titration curve is briefly described.
This document defines key terms related to redox reactions and oxidation states. It discusses oxidation and reduction in terms of electron transfer and changes in oxidation state. Oxidation involves the loss of electrons and an increase in oxidation state, while reduction involves the gain of electrons and a decrease in oxidation state. The document also covers how to calculate oxidation states and provides examples of balancing redox reactions.
The document provides information about a chemistry problem involving the molecular weight of a compound. A 3.41 x 10-6 g sample of the compound contains 4.67 x 10^16 molecules. Calculating the molecular weight based on the moles of molecules and mass of the sample gives a value of 44.0 g/mole. Of the compounds listed, CO2 has a molecular weight that matches this value.
This document discusses oxidation and reduction reactions and oxidation numbers. It provides rules for assigning oxidation numbers to elements in compounds and examples of using the rules to determine oxidation numbers. The key points are:
- Oxidation involves losing electrons and reduction involves gaining electrons.
- Oxidation numbers are assigned based on arbitrary rules and are not actual charges.
- Common rules include main group elements having an oxidation state of 0 in their elemental form, monoatomic ions having the same charge as their oxidation number, and the sum of oxidation numbers in a compound or polyatomic ion equaling the overall charge.
The document discusses oxidation and reduction reactions. It provides examples of oxidation as the loss of electrons and reduction as the gain of electrons. Corrosion is described as an oxidation reaction where metals react with substances like oxygen, water and acids. Electroplating is introduced as a process where a thin coating of a metal like copper or nickel is deposited onto a surface through an oxidation-reduction reaction.
This document provides information about oxidation, reduction, and redox reactions. It defines oxidation as losing electrons and reduction as gaining electrons. It discusses oxidizing agents and reducing agents. Examples of oxidation and reduction in daily life are provided, such as corrosion and food rancidity. The document also explains how to determine oxidation states and balance redox reactions. An exercise with sample problems is given to help identify oxidation states.
Redox reactions involve the transfer of electrons between reactants. In an electrochemical cell, a spontaneous redox reaction occurs between two half-cells separated by a salt bridge. In the oxidation half-reaction, electrons are lost at the anode. In the reduction half-reaction, electrons are gained at the cathode. The standard electrode potential (E0) of a half-reaction indicates its tendency to be reduced or oxidized relative to the standard hydrogen electrode. The cell potential (Ecell) is equal to the cathode potential minus the anode potential and determines if the cell reaction is spontaneous.
This document discusses redox reactions in terms of electron transfer and oxidation numbers. It defines redox reactions as reactions where one species is reduced while another is oxidized simultaneously through electron transfer. It explains how to write half reactions showing oxidation and reduction and how to balance them to obtain an overall ionic or full reaction equation. It also provides rules for determining the oxidation state or number of atoms in compounds and examples of oxidation states.
The document discusses an electrochemistry unit covering chemical reactions that produce electrical currents or voltages. It provides information on voltaic cells, also known as galvanic cells, which harness spontaneous redox reactions to generate electricity. The document explains that voltaic cells use two half-reactions, an oxidation reaction at the anode and a reduction reaction at the cathode, to drive electrons from the anode to the cathode through an external circuit. Standard reduction potentials are used to predict if reactions will occur spontaneously.
This document discusses oxidation and reduction reactions. It begins by defining oxidation as a reaction where substances combine with oxygen and reduction as a reaction where a substance "gave up" oxygen. It then explains that oxidation and reduction actually refer to the gain or loss of electrons in a chemical reaction, regardless of whether oxygen is present. Oxidation involves the loss of electrons, while reduction involves the gain of electrons. Redox reactions always involve both oxidation and reduction occurring together through the transfer of electrons. The document provides examples of how to identify the oxidizing agent, reducing agent, and what is being oxidized and reduced in redox reactions. It also discusses how to balance redox reactions through half-reactions and the role of acid and
This document discusses redox reactions and electrochemistry. It covers topics such as oxidation numbers, galvanic cells, cell notation, standard electrode potentials, and how cell potential relates to Gibbs free energy and equilibrium constants. It also discusses corrosion, batteries, fuel cells, and the differences between voltaic, electrolytic, and fuel cells. Redox reactions allow the interconversion of electrical and chemical energy.
This document provides an overview of redox reactions and electrochemistry applications. It discusses oxidation-reduction concepts like oxidation states and the OIL RIG mnemonic. Examples of redox reactions and electrochemistry applications are given, including galvanic cells, corrosion, electrolysis, and batteries. Key concepts covered include cell potential, the Nernst equation, and how concentration affects cell potential. Diagrams illustrate galvanic cells and how they function.
Okay, here are the steps to balance this reaction:
Step 1) Identify oxidizing and reducing agents:
MnO4- is reduced, so it is the oxidizing agent.
MnO4- + 5e- → Mn2+
SO2 is oxidized, so it is the reducing agent.
SO2 → SO42- + 4e-
Step 2) Balance other elements: No need here.
Step 3) Balance O by adding H2O:
MnO4- + 5e- → Mn2+ + 4H2O
SO2 → SO42- + 4e-
Step 4) Balance H by adding H+:
M
Electrochemistry is the branch of chemistry that studies chemical reactions which involve charge transfer between electrodes and electrolytes. Key aspects include:
- The conversion of electrical energy to chemical energy in electrolytic cells where non-spontaneous redox reactions are driven by an external power source.
- The conversion of chemical energy to electrical energy in galvanic/voltaic cells where a spontaneous redox reaction generates an electric current.
2. What are some common types of electrochemical cells?
Some common types of electrochemical cells include:
- Galvanic/voltaic cells such as batteries, which harness the spontaneous redox reaction between two half-cells to generate a voltage. Examples include zinc-
This document discusses redox titrimetry and provides information about key figures and concepts in the field. Linus Pauling is highlighted for his Nobel Prize-winning work in chemistry and peace efforts. Redox titrations with iodine are widely used to determine ascorbic acid concentrations. The document defines oxidation and reduction using "LEO says GER" and provides examples of redox reactions including the oxidation of Fe2+ to Fe3+ and the reduction of permanganate. It also discusses redox potentials, Nernst equation, standard electrode potentials, and how pH affects redox potentials. Reagents for redox titrations like KMnO4, K2Cr2O7, and I
This document discusses the ion-electron method for balancing redox reactions in acid medium. It begins by explaining what redox reactions are and calculating oxidation numbers. It then shows how to identify the oxidation and reduction half-reactions, balance the ions and electrons, and combine the half-reactions into a whole reaction. Key steps include writing the half-reactions in ionic form, balancing elements other than H or O, adding H2O and H+ to balance O and H, and adding electrons to balance charge. The ionic equation is then converted to a molecular equation by adding spectator ions in equal amounts to both sides.
Oxidation-reduction (redox) reactions involve the transfer of electrons between reactants, with one species being reduced as it gains electrons and the other being oxidized as it loses electrons. Redox reactions can be balanced using oxidation numbers to track electron transfers or by splitting the reaction into half-reactions for the oxidizing and reducing species. Key concepts include identifying oxidizing and reducing agents, assigning oxidation numbers, and using various methods to balance redox equations.
This document provides information on oxidation-reduction (redox) reactions and electrochemistry:
[1] Redox reactions involve the transfer of electrons between oxidizing and reducing agents. Common examples are corrosion reactions.
[2] Galvanic (voltaic) cells generate electricity through spontaneous redox reactions. The anode is where oxidation occurs and electrons are released. The cathode is where reduction occurs and electrons are gained.
[3] Cell potential depends on the relative tendencies of substances to be oxidized or reduced, as measured by standard reduction potentials. More negative potentials indicate greater reducing ability; more positive potentials indicate greater oxidizing ability.
The document discusses various topics related to reactions in aqueous solutions including:
- Solutions, solvents, solutes, electrolytes, and nonelectrolytes
- Strong and weak electrolytes and their ionization
- Acid-base theories and classifications of acids and bases
- Oxidation-reduction reactions and oxidation numbers
- Precipitation, acid-base, and redox reactions
- Solution stoichiometry, dilution, titrations, and gravimetric analysis
This document contains lecture notes on quantitative analysis in chemistry. It discusses gravimetric analysis, which determines the amount of a substance by converting it into a product that can be isolated and weighed. An example is given of determining the amount of lead in water by precipitating lead sulfate, filtering and weighing the precipitate. A practice problem demonstrates calculating the mass of lead from the mass of lead sulfate precipitate obtained.
This document provides an overview of redox reactions including:
- Redox reactions involve the transfer of electrons between chemical species, resulting in oxidation and reduction.
- Oxidizing agents gain electrons and are reduced, while reducing agents lose electrons and are oxidized.
- Latimer, Frost, and Pourbaix diagrams can be used to predict and understand redox reactions in aqueous solutions by showing the thermodynamic stability of different oxidation states.
- Key concepts like disproportionation, oxidizing/reducing abilities, and stable/unstable species can be determined from these types of diagrams.
This document provides information about ions and salts, including:
- Cations are atoms that lose electrons to form positively charged ions, while anions are atoms that gain electrons to form negatively charged ions. Common examples like NaCl are described.
- Transition metal ions and polyatomic ions that can combine to form various salts are listed, along with methods for naming monoatomic and polyatomic salts.
- Properties of salts like high melting points and conductivity are discussed briefly.
- The basics of Lewis dot structures and molecular geometry are introduced for covalent bonding in organic compounds. Electronegativity and molecular polarity are also covered.
This document discusses galvanic cells and cell potential. It begins by defining oxidation-reduction reactions and half-reactions. It then explains how galvanic cells use redox reactions to produce an electric current and discusses the components of galvanic cells including the salt bridge, electrodes, and direction of electron and ion flow. The document introduces standard reduction potentials and how to calculate cell potential from half-cell potentials. It explains how cell potential depends on concentration using Le Châtelier's principle and the Nernst equation. Examples are provided to demonstrate how to calculate cell potentials, determine reaction spontaneity, and predict changes in potential with changing concentrations.
Asthma is a chronic inflammatory lung disease that causes narrowing of the airways. It affects over 300 million people worldwide. The hallmark symptoms of asthma include wheezing, coughing, chest tightness, and shortness of breath. Asthma is caused by a combination of genetic and environmental factors that lead to airway inflammation and constriction. Common triggers include allergens, viruses, exercise, and air pollution. Diagnosis involves lung function tests to measure airflow limitation and its improvement with bronchodilator medication. Treatment focuses on reducing symptoms with bronchodilators and preventing exacerbations with anti-inflammatory drugs like corticosteroids.
This document provides information about oxidation, reduction, and redox reactions. It defines oxidation as losing electrons and reduction as gaining electrons. It discusses oxidizing agents and reducing agents. Examples of oxidation and reduction in daily life are provided, such as corrosion and food rancidity. The document also explains how to determine oxidation states and balance redox reactions. An exercise with sample problems is given to help identify oxidation states.
Redox reactions involve the transfer of electrons between reactants. In an electrochemical cell, a spontaneous redox reaction occurs between two half-cells separated by a salt bridge. In the oxidation half-reaction, electrons are lost at the anode. In the reduction half-reaction, electrons are gained at the cathode. The standard electrode potential (E0) of a half-reaction indicates its tendency to be reduced or oxidized relative to the standard hydrogen electrode. The cell potential (Ecell) is equal to the cathode potential minus the anode potential and determines if the cell reaction is spontaneous.
This document discusses redox reactions in terms of electron transfer and oxidation numbers. It defines redox reactions as reactions where one species is reduced while another is oxidized simultaneously through electron transfer. It explains how to write half reactions showing oxidation and reduction and how to balance them to obtain an overall ionic or full reaction equation. It also provides rules for determining the oxidation state or number of atoms in compounds and examples of oxidation states.
The document discusses an electrochemistry unit covering chemical reactions that produce electrical currents or voltages. It provides information on voltaic cells, also known as galvanic cells, which harness spontaneous redox reactions to generate electricity. The document explains that voltaic cells use two half-reactions, an oxidation reaction at the anode and a reduction reaction at the cathode, to drive electrons from the anode to the cathode through an external circuit. Standard reduction potentials are used to predict if reactions will occur spontaneously.
This document discusses oxidation and reduction reactions. It begins by defining oxidation as a reaction where substances combine with oxygen and reduction as a reaction where a substance "gave up" oxygen. It then explains that oxidation and reduction actually refer to the gain or loss of electrons in a chemical reaction, regardless of whether oxygen is present. Oxidation involves the loss of electrons, while reduction involves the gain of electrons. Redox reactions always involve both oxidation and reduction occurring together through the transfer of electrons. The document provides examples of how to identify the oxidizing agent, reducing agent, and what is being oxidized and reduced in redox reactions. It also discusses how to balance redox reactions through half-reactions and the role of acid and
This document discusses redox reactions and electrochemistry. It covers topics such as oxidation numbers, galvanic cells, cell notation, standard electrode potentials, and how cell potential relates to Gibbs free energy and equilibrium constants. It also discusses corrosion, batteries, fuel cells, and the differences between voltaic, electrolytic, and fuel cells. Redox reactions allow the interconversion of electrical and chemical energy.
This document provides an overview of redox reactions and electrochemistry applications. It discusses oxidation-reduction concepts like oxidation states and the OIL RIG mnemonic. Examples of redox reactions and electrochemistry applications are given, including galvanic cells, corrosion, electrolysis, and batteries. Key concepts covered include cell potential, the Nernst equation, and how concentration affects cell potential. Diagrams illustrate galvanic cells and how they function.
Okay, here are the steps to balance this reaction:
Step 1) Identify oxidizing and reducing agents:
MnO4- is reduced, so it is the oxidizing agent.
MnO4- + 5e- → Mn2+
SO2 is oxidized, so it is the reducing agent.
SO2 → SO42- + 4e-
Step 2) Balance other elements: No need here.
Step 3) Balance O by adding H2O:
MnO4- + 5e- → Mn2+ + 4H2O
SO2 → SO42- + 4e-
Step 4) Balance H by adding H+:
M
Electrochemistry is the branch of chemistry that studies chemical reactions which involve charge transfer between electrodes and electrolytes. Key aspects include:
- The conversion of electrical energy to chemical energy in electrolytic cells where non-spontaneous redox reactions are driven by an external power source.
- The conversion of chemical energy to electrical energy in galvanic/voltaic cells where a spontaneous redox reaction generates an electric current.
2. What are some common types of electrochemical cells?
Some common types of electrochemical cells include:
- Galvanic/voltaic cells such as batteries, which harness the spontaneous redox reaction between two half-cells to generate a voltage. Examples include zinc-
This document discusses redox titrimetry and provides information about key figures and concepts in the field. Linus Pauling is highlighted for his Nobel Prize-winning work in chemistry and peace efforts. Redox titrations with iodine are widely used to determine ascorbic acid concentrations. The document defines oxidation and reduction using "LEO says GER" and provides examples of redox reactions including the oxidation of Fe2+ to Fe3+ and the reduction of permanganate. It also discusses redox potentials, Nernst equation, standard electrode potentials, and how pH affects redox potentials. Reagents for redox titrations like KMnO4, K2Cr2O7, and I
This document discusses the ion-electron method for balancing redox reactions in acid medium. It begins by explaining what redox reactions are and calculating oxidation numbers. It then shows how to identify the oxidation and reduction half-reactions, balance the ions and electrons, and combine the half-reactions into a whole reaction. Key steps include writing the half-reactions in ionic form, balancing elements other than H or O, adding H2O and H+ to balance O and H, and adding electrons to balance charge. The ionic equation is then converted to a molecular equation by adding spectator ions in equal amounts to both sides.
Oxidation-reduction (redox) reactions involve the transfer of electrons between reactants, with one species being reduced as it gains electrons and the other being oxidized as it loses electrons. Redox reactions can be balanced using oxidation numbers to track electron transfers or by splitting the reaction into half-reactions for the oxidizing and reducing species. Key concepts include identifying oxidizing and reducing agents, assigning oxidation numbers, and using various methods to balance redox equations.
This document provides information on oxidation-reduction (redox) reactions and electrochemistry:
[1] Redox reactions involve the transfer of electrons between oxidizing and reducing agents. Common examples are corrosion reactions.
[2] Galvanic (voltaic) cells generate electricity through spontaneous redox reactions. The anode is where oxidation occurs and electrons are released. The cathode is where reduction occurs and electrons are gained.
[3] Cell potential depends on the relative tendencies of substances to be oxidized or reduced, as measured by standard reduction potentials. More negative potentials indicate greater reducing ability; more positive potentials indicate greater oxidizing ability.
The document discusses various topics related to reactions in aqueous solutions including:
- Solutions, solvents, solutes, electrolytes, and nonelectrolytes
- Strong and weak electrolytes and their ionization
- Acid-base theories and classifications of acids and bases
- Oxidation-reduction reactions and oxidation numbers
- Precipitation, acid-base, and redox reactions
- Solution stoichiometry, dilution, titrations, and gravimetric analysis
This document contains lecture notes on quantitative analysis in chemistry. It discusses gravimetric analysis, which determines the amount of a substance by converting it into a product that can be isolated and weighed. An example is given of determining the amount of lead in water by precipitating lead sulfate, filtering and weighing the precipitate. A practice problem demonstrates calculating the mass of lead from the mass of lead sulfate precipitate obtained.
This document provides an overview of redox reactions including:
- Redox reactions involve the transfer of electrons between chemical species, resulting in oxidation and reduction.
- Oxidizing agents gain electrons and are reduced, while reducing agents lose electrons and are oxidized.
- Latimer, Frost, and Pourbaix diagrams can be used to predict and understand redox reactions in aqueous solutions by showing the thermodynamic stability of different oxidation states.
- Key concepts like disproportionation, oxidizing/reducing abilities, and stable/unstable species can be determined from these types of diagrams.
This document provides information about ions and salts, including:
- Cations are atoms that lose electrons to form positively charged ions, while anions are atoms that gain electrons to form negatively charged ions. Common examples like NaCl are described.
- Transition metal ions and polyatomic ions that can combine to form various salts are listed, along with methods for naming monoatomic and polyatomic salts.
- Properties of salts like high melting points and conductivity are discussed briefly.
- The basics of Lewis dot structures and molecular geometry are introduced for covalent bonding in organic compounds. Electronegativity and molecular polarity are also covered.
This document discusses galvanic cells and cell potential. It begins by defining oxidation-reduction reactions and half-reactions. It then explains how galvanic cells use redox reactions to produce an electric current and discusses the components of galvanic cells including the salt bridge, electrodes, and direction of electron and ion flow. The document introduces standard reduction potentials and how to calculate cell potential from half-cell potentials. It explains how cell potential depends on concentration using Le Châtelier's principle and the Nernst equation. Examples are provided to demonstrate how to calculate cell potentials, determine reaction spontaneity, and predict changes in potential with changing concentrations.
Asthma is a chronic inflammatory lung disease that causes narrowing of the airways. It affects over 300 million people worldwide. The hallmark symptoms of asthma include wheezing, coughing, chest tightness, and shortness of breath. Asthma is caused by a combination of genetic and environmental factors that lead to airway inflammation and constriction. Common triggers include allergens, viruses, exercise, and air pollution. Diagnosis involves lung function tests to measure airflow limitation and its improvement with bronchodilator medication. Treatment focuses on reducing symptoms with bronchodilators and preventing exacerbations with anti-inflammatory drugs like corticosteroids.
Asthma is a chronic disease characterized by inflammation of the airways causing coughing, wheezing, chest tightness, and difficulty breathing. It is usually caused by allergic triggers like pollen, dust mites, or animal dander that lead to bronchospasms and airway obstruction. Diagnosis involves patient history, physical exam, pulmonary function tests, and allergy testing. Treatment includes bronchodilators, corticosteroids, leukotriene modifiers, and monoclonal antibodies to reduce inflammation and prevent symptoms.
Ischaemic heart disease is caused by an imbalance between the heart's supply and demand for oxygenated blood, usually due to atherosclerosis narrowing the coronary arteries. The main symptoms are chest pain or discomfort known as angina. There are different types of angina that vary based on their triggers and patterns. Diagnosis involves tests like ECG, echocardiogram, stress tests and angiography. Treatment options include medications to reduce demands on the heart like nitrates, beta-blockers, and calcium channel blockers, as well as interventions like angioplasty, stents and bypass surgery.
Atherosclerosis is a disease where plaque builds up in the arteries. Over time, the plaque hardens and narrows the arteries, limiting blood flow. Risk factors include age, family history, smoking, high blood pressure, high cholesterol, diabetes, and obesity. Complications arise when blood flow is reduced to organs like the heart, brain, kidneys, and limbs, potentially causing heart attacks, strokes, chronic kidney disease, or poor circulation. Treatment focuses on lifestyle changes and medications to control risk factors and symptoms.
This document provides an outline for a lecture on hypertension. It begins with objectives to understand hypertension's etiology, risk factors, and complications. It then covers definitions of hypertension, classifications based on cause and clinical features, risk factors, pathogenesis, regulation of blood pressure, vascular changes in hypertension, and complications affecting the heart, blood vessels, kidneys, eyes, and brain. The lecture topics include primary and secondary causes, benign vs malignant hypertension, endocrine factors influencing blood pressure, and target organ damage.
Hypertension and its pathophysiology.pptxImtiyaz60
The document discusses hypertension and the heart. It provides details on:
- The structure and layers of the heart, including the myocardium and pericardium.
- The path of blood through the heart, from the vena cava and atria to the ventricles, valves, and out the aorta to the body.
- Additional details are given on heart size, location in the thoracic cavity, and the double-walled pericardium surrounding and protecting the heart.
This document discusses various appetite stimulants, digestants, and carminatives. It describes how appetite is influenced by several factors in the hypothalamus and gut-brain pathways. Common appetite stimulants mentioned include lemon pickles, bitter orange peel, and soups containing aromatic oils. Some medications can increase appetite but also have side effects. The document also discusses various digestive enzymes and bile acids that may aid digestion, though evidence for their efficacy is limited. Finally, it outlines several common carminative herbs and spices that can relieve gas and bloating.
Anti Ulcer drugs pharmacology and classificationImtiyaz60
This document summarizes drugs used to treat peptic ulcers. It discusses the anatomy and physiology of gastric acid secretion regulated by histamine, acetylcholine, and gastrin. It describes prostaglandins' protective role in the stomach and how H2 receptor blockers and proton pump inhibitors work to suppress acid secretion. H2 blockers competitively inhibit histamine receptors, while PPIs irreversibly inactivate the proton pump. Common medications discussed include cimetidine, ranitidine, famotidine, omeprazole, and lansoprazole. The goals of anti-ulcer therapy are relieving pain, promoting healing, and preventing complications and relapse.
Ginger and asafoetida are plants with medicinal properties. Ginger is native to Southeast Asia and cultivated in many tropical regions. It has buff-colored rhizomes with an aromatic odor and taste. Chemical constituents include volatile oils and phenolic compounds that give ginger its flavor and pharmacological effects. Asafoetida is an oleo-gum-resin obtained from Ferula plants. It occurs in tear or mass forms, has an intense odor, and chemical tests detect umbelliferone. Both ginger and asafoetida have traditional uses as carminatives, expectorants, and to treat conditions like nausea, flatulence, and asthma. They can be subject to adulteration
Leprosy is caused by Mycobacterium leprae. It primarily affects the skin and peripheral nerves, causing hypopigmented patches and thickening of nerves. There are two main forms - tuberculoid leprosy, which causes localized lesions, and lepromatous leprosy, which involves multiple organs. Diagnosis involves skin smears and biopsies to identify acid-fast bacilli. Treatment involves multidrug chemotherapy regimens containing dapsone, rifampicin, and clofazimine. Prevention focuses on contact tracing, chemoprophylaxis, isolation during reactions, and rehabilitation.
Tuberculosis (TB) is a chronic bacterial infection caused by Mycobacterium tuberculosis that typically forms granulomas in the lungs. It is treatable with a combination of anti-TB drugs over a 6-12 month period to kill both actively replicating and dormant bacilli. Diagnosis involves physical exam, chest x-ray, tuberculin skin test, and sputum culture. Risk factors include HIV infection, poverty, and crowded living conditions.
Stroke is the 5th leading cause of death in the US. There are three main types of stroke: ischemic, hemorrhagic, and transient ischemic attacks (TIAs). Ischemic strokes, which account for 85% of cases, occur when a blood clot blocks an artery supplying blood to the brain. Hemorrhagic strokes occur when a brain artery ruptures due to conditions like hypertension. TIAs are temporary and cause no permanent damage but indicate risk for future strokes. Symptoms of stroke appear suddenly and include face drooping, arm weakness, speech difficulties, and severe headache. Diagnostic tests help determine the type and location of stroke. Lifestyle changes and medical treatment can help prevent strokes.
The thyroid gland is located in the neck below the larynx. It produces thyroid hormones including thyroxine (T4) and triiodothyronine (T3) which increase metabolism in nearly every organ system. Iodine is necessary for thyroid hormone production. Disorders include hypothyroidism, where thyroid hormone production is inadequate, and hyperthyroidism, where production is excessive. Graves' disease is an autoimmune cause of hyperthyroidism. Cretinism results from untreated congenital hypothyroidism and causes severe physical and mental impairment.
Inflammatory bowel disease (IBD) represents a group of chronic disorders that cause prolonged inflammation of the digestive tract. The two main types are ulcerative colitis, which causes inflammation and ulcers in the lining of the large intestine, and Crohn's disease, which is a chronic inflammatory disease that can affect any part of the gastrointestinal tract from mouth to anus. IBD is treated through a combination of medications, dietary changes, and sometimes surgery, with the goals of inducing and maintaining remission of symptoms, preventing complications, and avoiding surgery if possible. Treatments include aminosalicylates, corticosteroids, immunosuppressants, biologics that target tumor necrosis factor, and antimicrobial agents.
Tannins are polyphenolic compounds found in many plants. They are classified as hydrolysable tannins, condensed tannins, or pseudo-tannins. Hydrolysable tannins are hydrolyzed by acids into gallic acid or ellagic acid, while condensed tannins are more resistant to hydrolysis. Tannins are extracted using mixtures of polar and non-polar solvents due to their high molecular weight. Identification tests for tannins include the gelatin test, Goldbeater's skin test, and reactions with ferrous sulfate or ferric chloride that produce colors. Pterocarpus marsupium, or Bijasal, is a plant source of k
This document discusses various drug classes used in the treatment of heart failure, including their mechanisms and effects. Diuretics reduce preload on the heart by reducing extracellular fluid volume through natriuresis. Vasodilators such as nitroglycerin and ACE inhibitors reduce preload and afterload by dilating blood vessels. Nesiritide is a natriuretic peptide that causes vasodilation and natriuresis. β-blockers improve outcomes in heart failure by inhibiting the deleterious effects of sympathetic activation on the heart.
Tuberculosis (TB) is a bacterial infection caused by Mycobacterium tuberculosis that most commonly infects the lungs. It can be treated with antibiotics. TB is spread through airborne droplets when an infected person coughs or sneezes. While latent TB means the immune system has contained the infection and the person is not infectious, active TB means the person is sick and can spread the disease. Standard TB treatment involves a combination of antibiotics like isoniazid, rifampin and ethambutol over a period of 6-9 months.
The document discusses infectious diseases and infectious agents. It covers host barriers to infection like the skin, respiratory system, gastrointestinal tract, and urogenital tract. It describes how these barriers can fail and allow infection. It also discusses the different classes of infectious agents including bacteria, viruses, fungi and parasites. The document outlines the different types of inflammatory responses infections can cause like suppurative inflammation, granulomatous inflammation, and cytopathic responses. It covers how microbes can evade the immune system and the various ways infections can be transmitted.
The document defines key terms related to the electrophysiology of the heart such as action potential, membrane potential, refractory period, and threshold potential. It then describes the four phases of the cardiac action potential: Phase 0 involves stimulation and sodium/calcium influx causing depolarization; Phase 1 involves partial repolarization through ion efflux; Phase 2 involves a plateau phase through continued ion fluxes; Phase 3 involves full repolarization through ion efflux slower than depolarization. Phase 4 is the interval between repolarizations. The cardiac action potential triggers mechanical contraction. An electrocardiogram detects and records the summed action potentials to analyze patterns like the P, QRS, and T waves related to atrial depolarization, ventricular depolarization
How to Manage Your Lost Opportunities in Odoo 17 CRMCeline George
Odoo 17 CRM allows us to track why we lose sales opportunities with "Lost Reasons." This helps analyze our sales process and identify areas for improvement. Here's how to configure lost reasons in Odoo 17 CRM
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.
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.
Reimagining Your Library Space: How to Increase the Vibes in Your Library No ...Diana Rendina
Librarians are leading the way in creating future-ready citizens – now we need to update our spaces to match. In this session, attendees will get inspiration for transforming their library spaces. You’ll learn how to survey students and patrons, create a focus group, and use design thinking to brainstorm ideas for your space. We’ll discuss budget friendly ways to change your space as well as how to find funding. No matter where you’re at, you’ll find ideas for reimagining your space in this session.
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...PECB
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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How to Fix the Import Error in the Odoo 17Celine George
An import error occurs when a program fails to import a module or library, disrupting its execution. In languages like Python, this issue arises when the specified module cannot be found or accessed, hindering the program's functionality. Resolving import errors is crucial for maintaining smooth software operation and uninterrupted development processes.
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.
Main Java[All of the Base Concepts}.docxadhitya5119
This is part 1 of my Java Learning Journey. This Contains Custom methods, classes, constructors, packages, multithreading , try- catch block, finally block and more.
Chapter wise All Notes of First year Basic Civil Engineering.pptxDenish Jangid
Chapter wise All Notes of First year Basic Civil Engineering
Syllabus
Chapter-1
Introduction to objective, scope and outcome the subject
Chapter 2
Introduction: Scope and Specialization of Civil Engineering, Role of civil Engineer in Society, Impact of infrastructural development on economy of country.
Chapter 3
Surveying: Object Principles & Types of Surveying; Site Plans, Plans & Maps; Scales & Unit of different Measurements.
Linear Measurements: Instruments used. Linear Measurement by Tape, Ranging out Survey Lines and overcoming Obstructions; Measurements on sloping ground; Tape corrections, conventional symbols. Angular Measurements: Instruments used; Introduction to Compass Surveying, Bearings and Longitude & Latitude of a Line, Introduction to total station.
Levelling: Instrument used Object of levelling, Methods of levelling in brief, and Contour maps.
Chapter 4
Buildings: Selection of site for Buildings, Layout of Building Plan, Types of buildings, Plinth area, carpet area, floor space index, Introduction to building byelaws, concept of sun light & ventilation. Components of Buildings & their functions, Basic concept of R.C.C., Introduction to types of foundation
Chapter 5
Transportation: Introduction to Transportation Engineering; Traffic and Road Safety: Types and Characteristics of Various Modes of Transportation; Various Road Traffic Signs, Causes of Accidents and Road Safety Measures.
Chapter 6
Environmental Engineering: Environmental Pollution, Environmental Acts and Regulations, Functional Concepts of Ecology, Basics of Species, Biodiversity, Ecosystem, Hydrological Cycle; Chemical Cycles: Carbon, Nitrogen & Phosphorus; Energy Flow in Ecosystems.
Water Pollution: Water Quality standards, Introduction to Treatment & Disposal of Waste Water. Reuse and Saving of Water, Rain Water Harvesting. Solid Waste Management: Classification of Solid Waste, Collection, Transportation and Disposal of Solid. Recycling of Solid Waste: Energy Recovery, Sanitary Landfill, On-Site Sanitation. Air & Noise Pollution: Primary and Secondary air pollutants, Harmful effects of Air Pollution, Control of Air Pollution. . Noise Pollution Harmful Effects of noise pollution, control of noise pollution, Global warming & Climate Change, Ozone depletion, Greenhouse effect
Text Books:
1. Palancharmy, Basic Civil Engineering, McGraw Hill publishers.
2. Satheesh Gopi, Basic Civil Engineering, Pearson Publishers.
3. Ketki Rangwala Dalal, Essentials of Civil Engineering, Charotar Publishing House.
4. BCP, Surveying volume 1
2. What are we doing in
this experiment?
Determine the % of Iron, in a sample by
performing a redox titration between a
solution of the iron sample and potassium
permanganate (KMnO4).
3. What is redox titration?
A TITRATION WHICH DEALS WITH A
REACTION INVOLVING OXIDATION AND
REDUCTION OF CERTAIN CHEMICAL
SPECIES.
What is a titration?
The act of adding standard solution in small
quantities to the test solution till the reaction
is complete is termed titration.
4. What is a standard solution?
A standard solution is one whose
concentration is precisely known.
What is a test solution?
A test solution is one whose
concentration is to be estimated
5. What is oxidation?
Old definition:
Combination of substance with oxygen
C (s) + O2(g) CO2(g)
Current definition:
Loss of Electrons is Oxidation (LEO)
Na Na+ + e-
Positive charge represents electron deficiency
ONE POSITIVE CHARGE MEANS DEFICIENT BY ONE ELECTRON
6. What is reduction?
Old definition:
Removal of oxygen from a compound
WO3 (s) + 3H2(g) W(s) + 3H2O(g)
Current definition:
Gain of Electrons is Reduction (GER)
Cl + e- Cl -
Negative charge represents electron richness
ONE NEGATIVE CHARGE MEANS RICH BY ONE ELECTRON
7. OXIDATION-REDUCTION
Oxidation and reduction go hand in hand.
In a reaction, if there is an atom undergoing
oxidation, there is probably another atom
undergoing reduction.
When there is an atom that donates electrons,
there is always an atom that accepts electrons.
Electron transfer happens from one atom to
another.
8. How to keep track of electron
transfer?
Oxidation number or oxidation state (OS):
Usually a positive, zero or a negative number (an integer)
A positive OS reflects the tendency atom to loose electrons
A negative OS reflects the tendency atom to gain electrons
9. Rules for assigning OS
The sum of the oxidation numbers of all of the atoms
in a molecule or ion must be equal in sign and value
to the charge on the molecule or ion.
KMnO4 SO4
2-
Potassium Permanganate Sulfate anion
OS of K + OS of Mn +
4(OS of O) = 0 OS of S + 4(OS of O) = -2
NH4
+
Ammonium cation
OS of N + 4(OS of H) = +1
10. Also, in an element, such as S8 or O2 , this rule
requires that all atoms must have an oxidation
number of 0.
In binary compounds (those consisting of only two
different elements), the element with greater
electronegativity is assigned a negative OS equal
to its charge as a simple monatomic ion.
NaCl
Na+ Cl-
MgS
Mg2+ S2-
11. When it is bonded directly to a non-metal atom,
the hydrogen atom has an OS of +1. (When bonded
to a metal atom, hydrogen has an OS of -1.)
Except for substances termed peroxides or
superoxides, the OS of oxygen in its compounds is -
2. In peroxides, oxygen has an oxidation number of
-1, and in superoxides, it has an oxidation number
of -½ .
H2O HCl
2H+ O2-
NH4
+
N3- 4(H+) H+ Cl-
Hydrogen peroxide: H2O2= 2H+ 2O-
Potassium superoxide: KO2= K+ 2O -1/2
12. Please Remember !!
In a periodic table,
Vertical columns are called GROUPS
Horizontal rows are called PERIODS
Electronegativity increases as we more left to right
along a period.
Electronegativity decrease as we move top to bottom
down a group.
14. Group 1A Group 2A
Tend to loose 1e-
OS = +1
Tend to loose 2e-
OS = +2
Has 1e- in the
outermost shell
Has 2e- in the
outermost shell
Alkali metals Alkaline-earth
metals
17. Group 3A
Tend to loose 3e-
OS = +3
Has 3e- in the
outermost shell
18. Group 4A
Can either loose 4e-
Or gain 4e-
Has 4e- in the
outermost shell
Exhibits variable
Oxidation state
-4,-3,-2,-1,0,+1,+2,+3,+4
19. Group 5A
Has 5e- in the
outermost shell
Can either loose 5e-
Or gain 3e-
Oxidation state
-3,+5
20. Group 6A
Has 6e- in the
outermost shell
Tend to gain 2e-
Oxidation state
-2
Group number - 8
Chalcogens
21. Group 7A
Has 7e- in the
outermost shell
Tend to gain 1e-
Oxidation state
-1
Group number - 8
Halogens
22. Group 8A
Has 8e- in the
outermost shell
Tend to gain/loose 0 e-
Oxidation state
0
Group number - 8
Inert elements
or
Noble gases
23. Sample problem
Find the OS of each Cr in K2Cr2O7
Let the OS of each Cr be = x
OS of K = +1 (Remember K belongs to Gp. 1A)
OS of O = -2 (Remember O belongs to Gp. 6A)
Net charge on the neutral K2Cr2O7 molecule = 0
So we have,
2(OS of K) + 2 ( OS of Cr) + 7 (OS of O)= 0
2(+1) + 2 ( x) + 7 (-2)= 0
2+ 2 ( x) +(-14)= 0
24. 2+ 2 ( x) +(-14)= 0
2 ( x) +(-12) = 0
2 ( x) = (12)
x = 6
Find the OS of each C in C2O4
2-
Let the OS of each C be = x
OS of O = -2 (Remember O belongs to Gp. 6A)
So we have,
2(OS of C) + 4 ( OS of O) = -2
2(x) + 4 ( -2) = -2
2 ( x) +(-8)= -2
25. 2 ( x) +(-8)= -2
2 ( x) = +6
( x) = +3
Find the OS of N in NH4+
Let the OS of each N be = x
OS of H = +1 (Remember H belongs to Gp. 1A)
So we have,
(OS of N) + 4 ( OS of H) = +1
(x) + 4 ( +1) = +1
( x) +(4)= +1
( x) = -3
26. Balancing simple redox reactions
Cu (s) + Ag +(aq) Ag(s) + Cu2+(aq)
Step 1: Pick out similar species from the equation
Cu(s) Cu2+(aq)
Ag +(aq) Ag (S)
Step 2: Balance the equations individually for
charges and number of atoms
Cu0(S) Cu2+(aq) + 2e-
Ag +(aq) + e- Ag (S)
27. Balancing simple redox reactions
Cu0(S) Cu2+(aq) + 2e-
Ag +(aq) + e- Ag (S)
Cu0(S) becomes Cu 2+ (aq) by loosing 2 electrons.
So Cu0(S) getting oxidized to Cu2+(aq) is the
oxidizing half reaction.
Ag+(aq) becomes Ag 0 (S) by gaining 1 electron.
So Ag+(aq) getting reduced to Ag (S) is the
reducing half reaction.
LEO-GER
28. Balancing simple redox reactions
Final Balancing act:
[Cu0(S) Cu2+(aq) + 2e-] × 1
[Ag +(aq) + e- Ag (S)]× 2
Making the number of electrons equal in both
half reactions
So we have,
Cu0(S) Cu2+(aq) + 2e-
2Ag +(aq) + 2e- 2Ag (S)
29. Cu0(S) Cu2+(aq) + 2e-
2Ag +(aq) + 2e- 2Ag (S)
Balancing simple redox reactions
Cu0(S) + 2Ag +(aq) + 2e-
Cu2+(aq) + 2Ag (S) + 2e-
Cu0(S) + 2Ag +(aq) Cu2+(aq) + 2Ag (S)
Number of e-s involved in the overall reaction is 2
31. Balancing complex redox reactions
MnO4
-(aq)+8H+ Mn+2(aq) + 4H2O
Balancing hydrogens:
Oxidation
numbers: Mn = +7,
O = -2 Mn = +2
Balancing electrons:
The left side of the equation has 5 less electrons than the right side
MnO4
-(aq)+8H++ 5e- Mn+2(aq) + 4H2O
Reducing Half
Reaction happening in an acidic medium
32. Balancing complex redox reactions
Final Balancing act:
Making the number of electrons equal in both half reactions
[Fe+2(aq) Fe+3(aq) + 1e- ]× 5
[MnO4
-(aq)+8H++ 5e- Mn+2(aq) + 4H2O]×1
5Fe+2(aq) 5Fe+3(aq) + 5e-
MnO4
-(aq)+8H++ 5e- Mn+2(aq) + 4H2O
5Fe2++MnO4
-(aq)+8H++ 5e-
5Fe3+ +Mn+2(aq) + 4H2O + 5e-
33. Balancing complex redox reactions
5Fe2++MnO4
-(aq)+8H+ 5Fe3+ +Mn+2(aq) + 4H2O
5 Fe 2+ ions are oxidized by 1 MnO4
- ion to 5 Fe3+
ions. Conversely 1 MnO4
- is reduced by 5 Fe2+ ions
to Mn2+.
If we talk in terms of moles:
5 moles of Fe 2+ ions are oxidized by 1mole of
MnO4
- ions to 5 moles of Fe3+ ions. Conversely
1 mole of MnO4
- ions is reduced by 5 moles of
Fe2+ ions to 1 mole of Mn2+ ions.
34. Conclusion from the balanced
chemical equation
For one mole of MnO4
- to completely react
With Fe2+, you will need 5 moles of Fe2+ ions.
So if the moles of MnO4
- used up in the reaction
is known, then the moles of Fe2+ involved in the
reaction will be 5 times the moles of MnO4
-
Mathematically written:
]
[
5 4
2
MnO
of
moles
Fe
of
Moles
35. How does this relationship concern our experiment?
Titration of unknown sample of Iron Vs KMnO4:
The unknown sample of iron contains, iron in Fe2+
oxidation state. So we are basically doing a redox
titration of Fe2+ Vs KMnO4
5Fe2++MnO4
-(aq)+8H+ 5Fe3+ +Mn+2(aq) + 4H2O
]
[
5 4
2
MnO
of
moles
Fe
of
Moles
36. 250mL 250mL 250mL
Vinitial
Vfinal
End point:
Pale Permanent
Pink color
KMnO4
Vfinal- Vinital= Vused (in mL)
mL
L
mL
in
V
L
in
V used
Used
KMnO
1000
1
1
)
(
)
(
4
Important requirement:
The concentration of
KMnO4 should be
known precisely.
38. Problem with KMnO4
Unfortunately, the permanganate solution,
once prepared, begins to decompose by the
following reaction:
4 MnO4
-(aq) + 2 H2O(l) 4 MnO2(s) + 3 O2(g) + 4 OH-(aq
So we need another solution whose concentration
is precisely known to be able to find the precise
concentration of KMnO4 solution.
39. Titration of Oxalic acid Vs KMnO4
Primary
standard
Secondary
standard
16 H+(aq) + 2 MnO4
-(aq) + 5 C2O4
-2(aq) 2 Mn+2(aq) +
10 CO2(g)
+ 8 H2O(l)
5 C2O4
2- ions are oxidized by 2 MnO4
- ions to 10 CO2
molecules. Conversely 2 MnO4
- is reduced by 5 C2O4
2-
ions to 2Mn2+ ions.
40. Titration of Oxalic acid Vs KMnO4
16 H+(aq) + 2 MnO4
-(aq) + 5 C2O4
-2(aq) 2 Mn+2(aq)
+10CO2(g) + 8 H2O(l)
If we talk in terms of moles:
5 moles of C2O4
2- ions are oxidized by 2 moles MnO4
-
ions to 10 moles of CO2 molecules. Conversely 2 moles
of MnO4
- is reduced by 5 moles of C2O4
2- ions to
2 moles of Mn2+ ions.
41. Conclusion from the balanced
chemical equation
For 5 moles of C2O4
2- ions to be completely oxidized
by MnO4
- we will need 2 moles of MnO4
- ions.
Conversely for 2 moles of MnO4
- to be completely
reduced by C2O4
2-, we will need 5 moles of C2O4
2- ions
4
2
4
2
2
5 MnO
of
moles
O
C
of
Moles
4
2
4
2
5
2
1 MnO
of
moles
O
C
of
Moles
42. 250mL 250mL 250mL
Vinitial
Vfinal
End point:
Pale Permanent
Pink color
KMnO4
Vfinal- Vinital= Vused (in mL)
mL
L
mL
in
V
L
in
V used
Used
KMnO
1000
1
1
)
(
)
(
4
Important requirement:
The concentration of
KMnO4 should be
known precisely.
0.15 g OXALIC ACID
+ 100 mL of 0.9 M
H2SO4.Heated to 80C
44. When preparing 0.9 M H2SO4
1.Wear SAFETY GOGGLES AND GLOVES
2.Use graduated cylinder to dispense the acid
from the bottle
3. Please have about 100 mL of water in
500 mL volumetric flask, before adding
acid in to it.
4. Add acid to the flask slowly in small
aliquots.