pH Calculations, Polyprotic Acids, Chemistry

pH Calculations, Polyprotic Acids

XVIII. Acids and Bases: Lecture 2 | 60:09 min

Lecture Description

Chemistry > pH Calculations, Polyprotic Acids

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pH Calculations, Polyprotic Acids

Use approximations (the 5% rule) in calculating pH in solutions of weak acids or bases
Conjugate bases of weak acids are weak bases and vice-versa
For conjugates K_aK_b = K_w
Do calculations of pH in solutions of conjugates like acetate and ammonium ions
For polyprotic acids successive K_a values get (much) smaller
Do calculations of pH in solutions of phosphoric acid, phosphate salts

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Table of Contents

I. Introduction
	Introduction to Chemistry	47:38
II. Atoms
	Atomic Theory and Measurement	62:38
	The Chemist's Atom	22:20
III. Significant Figures
	Significant Figures and the Mole	51:06
IV. Equations and Formulas
	Balancing Equations, Limiting Reagents, Percentage Yield	58:17
	Empirical and Molecular Formulas	61:11
V. Chemical Reactions
	Classifying Chemical Reactions	42:43
	Energy in Chemical Reactions	63:47
VI. Electromagnetic Radiation
	Electromagnetic Radiation Quantum Theory	63:35
VII. Periodic Table and Bonding
	Periodic Table, Electronic Configurations, Ionic Bond	73:12
	Covalent Bond, Lewis Structures, Molecular Orbitals	77:27
	Shapes of Molecules and Hybridization	71:19
VIII. States of Matter
	States of Matter, Intermolecular Forces, Gases and Gas laws	61:12
IX. Gases
	Partial Pressure, Real Gases, Atmospheric Pollution	61:12
X. Phases
	Vapor Pressure, Boiling Point, Phase Diagrams	56:58
XI. Solids
	Types of Solids, X-Ray Diffraction, Unit Cells	57:30
XII. Carbon
	Carbon Allotropes, Band Theory of Solids	52:34
XIII. Solutions
	Solutions, Henry's Law, Concentration Equations	65:40
XIV. Colligative Properties
	Colligative Properties, Colloids, Surfactants	70:42
XV. Kinetics
	Kinetics, Rate Laws, Reaction Mechanism	68:48
XVI. Temperature Effects
	Temperature Effects, Reaction Rate Theory, Catalysis	62:56
XVII. Equilibrium
	Physical and Chemical Equilibrium, Equilibrium Law, Le Chatelier's Principle	70:47
XVIII. Acids and Bases
	Acids and Bases: Strong and Weak, pH	60:41
	pH Calculations, Polyprotic Acids	60:09
	Titrations, Indicators, Buffers	66:19
XIX. Solubility
	Solubility Product Constant, Precipitation	59:36
XX. Enthalpy and Entropy
	Enthalpy, Entropy, Second Law of Thermodynamics	53:51
XXI. Gibbs' Function
	Gibbs' Function, Equilibrium	61:10
XXII. Redox Reactions
	Balancing Redox Reactions, Half Reactions	67:26
XXIII. Electrochemistry
	Electrochemical Cells, Half-Cell Potentials	67:52
	Practical Batteries, Electrolysis	62:06
XXIV. Radioactivity
	Radioactivity, Nuclear Equations, Mass Energy Equivalence	40:35
	Radioactive Decay, Half-Life, Nuclear Reactions	56:12
XXV. Miscellaneous
	Organic Structures, Isomers, Functional Groups	68:32
	Chemistry and the Environment	50:13