Chapter  5  Auxiliary Functions : Enthalpy, Helmholtz Energy, Gibbs Energy
5.1  Introduction
5.2  Closed Systems
5.2.1  Constant Volume Process (Isochoric Process)
5.2.2  Constant Pressure Process (Isobaric Process)
5.3  Characteristic Variables. Fundamental Equations.  Open Systems
5.3.1  Generalities
5.3.2  Internal Energy
5.3.3  Enthalpy
5.3.4  Helmholtz Function (Helmholtz Energy, Free Energy)
5.3.5  Gibbs Function  (Gibbs Energy, Free Enthalpy)
5.3.6  Chemical Potential. Summary
5.4  Maxwell’s Relations
5.5  Thermodynamic Equation of State
5.5.1  General Case
5.5.2  Equation of State for an Ideal Gas
5.6  Properties of Cp and CV
5.6.1  Relation between Cp and CV
5.6.2  Variation of CV with Volume and of Cp with Pressure
5.7  Physical Meaning of the Auxiliary Functions
5.7.1  Helmholtz Function (Free Energy, Helmholtz Energy)
5.7.2  Gibbs Function (Gibbs Energy, Free Enthalpy)
5.7.3  Spontaneous Evolution of a System.  Equilibrium Condition
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Modified January 10 2007