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**Consequences of an Ideal Gas Internal Energy a Function of***T*Only-

**A New State Function for Any System: Enthalpy***H = U + PV*-

**A New State Function for an Ideal Gas System: Entropy**-

**Another State Function: Helmholtz Free Energy:***F = U - TS*-

**Another and Friendly State Function: Gibbs Free Energy:***G = U - TS + PV*-

- The Second Law of Thermodynamics
- An Illustrative Example
- Alternative Statements of the Second Law (There are many)
- About this document ...

W. Craig Carter 2002-10-03