Physical Chemistry I

G, Gibb’s Energy
G = H- TS= U+pV-TS
H, Enthalpy
H=U+pV
F, Helmholtz’ Energy
F= U-TS
General Formalism of U

 

dU=TdS-pdV+ΣμdN

Chemical Potential

μ=μ(p′,V)+RTln(a)

 

μ=dG/dN

Affinity

Defined as:

A=μ(reactants)-μ(products)

 

diS

  • diS=-(1/T)ΣμdN
  • diS=(A/T)(dξ/dt)

x

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