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,Contents
Preface ........................................................................................................................................................................................................................................................................... vii
Author..............................................................................................................................................................................................................................................................................ix
WORKBOOK
PART 1: Gases and Gas Laws ................................................................................................................................................3
Key Points – Gas Laws .............................................................................................................................................................................................................3
Law of Corresponding States ............................................................................................................................................................................................. 4
Example Problems .................................................................................................................................................................................................................... 4
Key Points – Mixtures of Gases .......................................................................................................................................................................................... 7
Example Problems .................................................................................................................................................................................................................... 7
PART 2: The First Law of Thermodynamics: Work (PV) and Heat, as ∆U and ∆H........................................................... 11
Key Points – The First Law .................................................................................................................................................................................................. 11
Example Problems ..................................................................................................................................................................................................................12
Adiabatic Processes ................................................................................................................................................................................................................14
Example Problems ..................................................................................................................................................................................................................14
Key Points – Calorimetry .....................................................................................................................................................................................................15
Example Problems ..................................................................................................................................................................................................................16
Key Points – Hess’s Law Calculation for ∆H.............................................................................................................................................................17
Example Problems ..................................................................................................................................................................................................................17
Key Points – Indirect Methods for ∆H Determination ......................................................................................................................................17
Example Problems ..................................................................................................................................................................................................................18
Key Points – Using Cyclic Diagrams for ∆H ............................................................................................................................................................19
Example Problems ..................................................................................................................................................................................................................19
Key Points – Temperature Dependence of ∆H .....................................................................................................................................................20
Example Problems ..................................................................................................................................................................................................................21
PART 3: Second and Third Law of Thermodynamics, ∆S ................................................................................................25
Key Points – The Second Law ..........................................................................................................................................................................................25
Example Problems ..................................................................................................................................................................................................................27
Key Points – Real Gases and Entropy ...........................................................................................................................................................................33
PART 4: Free Energy (∆G), Helmholtz Energy (∆A), and Phase Equilibrium ..................................................................35
Key Points – Gibbs and Helmholtz Free Energy ...................................................................................................................................................35
Example Problems ..................................................................................................................................................................................................................37
Key Points – The Chemical Potential and Phase Diagrams ............................................................................................................................43
Example Problems ..................................................................................................................................................................................................................43
Key Points – The Chemical Potential of Real Gases and Fugacity ..............................................................................................................46
Example Problems ..................................................................................................................................................................................................................47
PART 5: Free Energy (∆G) of Mixing, Binary Liquid Mixtures, Colligative Properties, and Activity ...........................49
Key Points – Free Energy of Mixing ..............................................................................................................................................................................49
Example Problems ..................................................................................................................................................................................................................49
v
, vi Contents
Key Points – ∆G and Two-Component Liquid Mixtures..................................................................................................................................50
Key Points – Real Solutions and Excess Thermodynamic Functions for Mixtures ...........................................................................51
Example Problems ..................................................................................................................................................................................................................52
Key Points – Vapor Pressure, Raoult’s Law, and Henry’s Law for Mixtures ............................................................................................57
Key Points – Henry’s Law for Binary Mixtures.........................................................................................................................................................58
Key Points – Liquid–Vapor Phase Diagrams ............................................................................................................................................................59
Lever Rule Liquid Vapor Diagrams .........................................................................................................................................................................60
Key Points – Non-Ideal or Regular Solutions: Azeotropes ..............................................................................................................................60
Key Points – Activity and Activity Coefcients for Mixtures..........................................................................................................................61
Example Problems ..................................................................................................................................................................................................................61
Key Points – Colligative Properties................................................................................................................................................................................67
Example Problems ..................................................................................................................................................................................................................68
Key Points – Activity Coefcients in Colligative Properties for Real Solutions ...................................................................................71
Example Problems ..................................................................................................................................................................................................................72
Key Points – Henry’s Law and Saturated Solutions of Solute B in A .........................................................................................................73
Example Problems ..................................................................................................................................................................................................................74
PART 6: Free Energy, Equilibrium Constants, and Electromotive Force .......................................................................77
Key Points – Free Energy and Chemical Reactions .............................................................................................................................................77
Example Problems ..................................................................................................................................................................................................................78
Key Points – Ionic Strength, Activity Coefcients, and Efect on Equilibria .........................................................................................82
Example Problems ..................................................................................................................................................................................................................83
Key Points – Electrochemistry, Equilibrium, and Activities............................................................................................................................ 84
Example Problems ..................................................................................................................................................................................................................86
Electrochemistry and Equilibrium in Biochemical Redox Reactions .......................................................................................................87
Example Problems ..................................................................................................................................................................................................................88
Key Points – Thermodynamics of Redox Reactions: ∆S° and ∆H°...........................................................................................................90
Example Problems ..................................................................................................................................................................................................................90
Mean Ionic Activity and Redox Reactions ................................................................................................................................................................91
Example Problems ..................................................................................................................................................................................................................92
FINAL ANSWERS
Answers to Example Problems..........................................................................................................................................95
Final Answers and Hints ......................................................................................................................................................................................................95
Part 1: Gases and Gas Laws .........................................................................................................................................................................................95
Part 2: First Law of Thermodynamics – Work (PV), Heat, ∆U and ∆H...............................................................................................96
Part 3: Second and Third Laws – Entropy .......................................................................................................................................................100
Part 4: Free Energy (∆G), Helmholtz Energy (∆A), and Phase Equilibrium .................................................................................. 103
Part 5: Free Energy (∆G) of Mixing, Binary Liquid Mixtures, Colligative Properties, and Activity ..................................109
Part 6: Free Energy (∆G), Equilibrium, and Electrochemistry ...............................................................................................................119
Index .................................................................................................................................................................................. 127