What is Gibbs Free Energy?

What ensemble, if any, corresponds to the Gibbs free energy?

  • E.g. Grand Potential <=> Grand Canonical Ensemble and Helmholtz Free Energy <=> Canonical Ensemble.

  • Answer:

    A canonical esque ensemble with constant p,N and T for gases. In general an ensemble where an intensive property analogous to pressure (Surface tension, Magnetic field etc) is held constant along with T and N. Try applying the canonical model to a paramagnet at constant H and you'll find -ktlnZ=G

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