Chapter 5 The Second Law: The
machinery
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Chapter 5 The Second Law: The machinery
Combining the First and Second Laws
5.1 The fundamental equations 5.2 Properties of the internal energy Properties of the Gibbs energy 5.3 General considerations 5.4 The variation of the Gibbs energy with temp. 5.5 The variation of the Gibbs energy with pressure
G f (T , p) compare with
dG
G T
p
dT
G p
T
dp
dG SdT Vdp
G T
p
S
;
G p
T
V
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Chapter 5 The Second Law: The machinery
5.2 Properties of the internal energy
P T V
nR V nb
T
nRT
nRT
an2
V nb V nb V 2
an2 V2
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(c) The variation of U、H and S with T
U T
V
CV
nCV ,m
H T
p
Cp
nC p,m