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Narin Lawan
Добавлен 6 окт 2011
lab9_2 Titration by pH measurement.
TITRATION BY pH MEASUREMENT
OBJECTIVES
1. To draw titration curves
2. To determine the weak acid dissociation constant (Ka)
THEORY
Titration by pH measurement involves the titration between an acid and a base by measuring the pH or the concentration of H3O+ ions of the solution. The pH undergoes rapid changes until a certain point, known as the equivalence point, where the reaction between the acid and base is complete. At this point, there is a significant change in pH. In the experimental measurement of pH changes, two types of electrodes are used together:
1. Indicator electrode: This electrode monitors the changes in the concentration of H3O+ ions as its electrical potential varies with...
OBJECTIVES
1. To draw titration curves
2. To determine the weak acid dissociation constant (Ka)
THEORY
Titration by pH measurement involves the titration between an acid and a base by measuring the pH or the concentration of H3O+ ions of the solution. The pH undergoes rapid changes until a certain point, known as the equivalence point, where the reaction between the acid and base is complete. At this point, there is a significant change in pH. In the experimental measurement of pH changes, two types of electrodes are used together:
1. Indicator electrode: This electrode monitors the changes in the concentration of H3O+ ions as its electrical potential varies with...
Просмотров: 119
Видео
lab9_4 Titration by pH measurement.
Просмотров 1953 месяца назад
TITRATION BY pH MEASUREMENT OBJECTIVES 1. To draw titration curves 2. To determine the weak acid dissociation constant (Ka) THEORY Titration by pH measurement involves the titration between an acid and a base by measuring the pH or the concentration of H3O ions of the solution. The pH undergoes rapid changes until a certain point, known as the equivalence point, where the reaction between the a...
lab9_1 Titration by pH measurement.
Просмотров 1873 месяца назад
TITRATION BY pH MEASUREMENT OBJECTIVES 1. To draw titration curves 2. To determine the weak acid dissociation constant (Ka) THEORY Titration by pH measurement involves the titration between an acid and a base by measuring the pH or the concentration of H3O ions of the solution. The pH undergoes rapid changes until a certain point, known as the equivalence point, where the reaction between the a...
lab5 Conductance of electrolytes.
Просмотров 913 месяца назад
CONDUCTANCE OF ELECTROLYTES OBJECTIVES 1. To study the conductance of electrolyte solution 2. To determine dissociation constant (Ka) of acetic acid solution THEORY when an electrolyte such as sodium chloride, potassium chloride etc. is dissolved in a solvent like water, the electrolyte is completely dissociated to give its constituent ions (namely cations and anions). When an electric field is...
lab1 Molecular weight determination of polyvinyl chloride via dilute-solution viscometry.
Просмотров 2 тыс.3 месяца назад
MOLECULAR WEIGHT DETERMINATION OF POLYVINYL CHLORIDE VIA DILUTE-SOLUTION VISCOMETRY OBJECTIVES 1. To determine the liquid viscosity using Oswald viscometer 2. To determine the molecular weight of polyvinyl alcohol (PVOH) THEORY Solutions of a high-molecular-weight polymer, even at low concentrations, can flow only slowly. Addition of a small amount of the polymer to the fluid can make it viscou...
lab9_3 Titration by pH measurement.
Просмотров 1123 месяца назад
TITRATION BY pH MEASUREMENT OBJECTIVES 1. To draw titration curves 2. To determine the weak acid dissociation constant (Ka) THEORY Titration by pH measurement involves the titration between an acid and a base by measuring the pH or the concentration of H3O ions of the solution. The pH undergoes rapid changes until a certain point, known as the equivalence point, where the reaction between the a...
lab3 Determination of rate and order of reaction between acetone and iodine.
Просмотров 2,6 тыс.3 месяца назад
DETERMINATION OF RATE AND ORDER OF REACTION BETWEEN ACETONE AND IODINE OBJECTIVE To determine the rate and order of reaction between acetone and iodine THEORY The rate of a reaction is expressed as the change in concentrations of the reactants or products with time. The units of reaction rates are usually M/s or M/min.
lab13 Thermodynamics of electrochemical cells.
Просмотров 1,5 тыс.3 месяца назад
THERMODYNAMICS OF ELECTROCHEMICAL CELLS OBJECTIVES 1. To study the electrochemistry of voltaic (galvanic) cells and determine the values of the thermodynamic functions. 2. To construct electrochemical cells by combining different metallic systems and their solutions. 3. To measure the potential of the prepared cells at various temperatures will render the values of the thermodynamic functions d...
lab7_1 Determination of the equilibrium constant.
Просмотров 1,8 тыс.3 месяца назад
DETERMINATION OF THE EQUILIBRIUM CONSTANT OF THE REACTION BY THE DISTRIBUTION METHOD In the extraction of a solute (the solute being dissolved) from a solvent in water, using an immiscible solvent, the extraction will not achieve a hundred percent efficiency due to the distribution of the solute, which does not dissolve in water, between the layers of the two solvents. The extent of distributio...
lab8_1 Determination of the critical solution temperature of phenol-water system.
Просмотров 1183 месяца назад
DETERMINATION OF THE CRITICAL SOLUTION TEMPERATURE OF PHENOL-WATER SYSTEM The simplest of the two-component phase diagrams are those for liquid systems which may break up into two liquid phases. Such systems are usually treated at some constant pressure, usually atmospheric high enough so that no vapour can occur at equilibrium with the liquid phases and over a range of temperatures high enough...
lab8_2 Determination of the critical solution temperature of phenol-water system.
Просмотров 1383 месяца назад
DETERMINATION OF THE CRITICAL SOLUTION TEMPERATURE OF PHENOL-WATER SYSTEM The simplest of the two-component phase diagrams are those for liquid systems which may break up into two liquid phases. Such systems are usually treated at some constant pressure, usually atmospheric high enough so that no vapour can occur at equilibrium with the liquid phases and over a range of temperatures high enough...
lab8_3 Determination of the critical solution temperature of phenol-water system.
Просмотров 1133 месяца назад
DETERMINATION OF THE CRITICAL SOLUTION TEMPERATURE OF PHENOL-WATER SYSTEM The simplest of the two-component phase diagrams are those for liquid systems which may break up into two liquid phases. Such systems are usually treated at some constant pressure, usually atmospheric high enough so that no vapour can occur at equilibrium with the liquid phases and over a range of temperatures high enough...
Lab6 Phase diagram of naphthalene-diphenyl system
Просмотров 2033 месяца назад
THE STUDY OF THE PHASE DIAGRAM OF NAPHTHALENE-DIPHENYL SYSTEM TWO-COMPONENT SOLID-LIQUID SYSTEM: FORMATION OF & EUTECTIC MIXTURE Consider a two-component system, at some fixed pressure, where the temperature range treated is such as to include formation of one or more solid phases. A simple behavior is shown by those systems for which the liquids are completely soluble in one another and in whi...
203117 Lab10 Determination of dissolved oxygen 2 [TH]
Просмотров 2683 года назад
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lab7_2 Determination of the equilibrium constant.
Просмотров 1,5 тыс.4 года назад
lab7_2 Determination of the equilibrium constant.
lab4 Determination of the transference number of hydrogen ion by the moving boundary method.
Просмотров 1,6 тыс.4 года назад
lab4 Determination of the transference number of hydrogen ion by the moving boundary method.