12: Free Energy Last updated Jun 23, 2019 Save as PDF 11.9: Entropy is a Function of State 12.1: Review of Internal Energy and Enthalpy Page ID7290 Jeremy TatumUniversity of Victoria ( \newcommand{\kernel}{\mathrm{null}\,}\) 12.1: Review of Internal Energy and Enthalpy12.2: Free Energy12.3: Helmholtz Free Energy12.4: Gibbs Free Energy12.5: Summary, the Maxwell Relations, and the Gibbs-Helmholtz Relations12.6: The Joule and Joule-Thomson Coefficients12.7: The Thermodynamic Functions for an Ideal Gas12.8: The Thermodynamic Functions for Other Substances12.9: Absolute Entropy12.10: Charging a Battery12.11: Surface Energy12.12: Fugacity