The residual of this quantity equals RT times the log of the fugacity coefficient.
The residual of this quantity equals RT times the log of the fugacity coefficient. This quantity is used as a generating function since its canonical variables are temperature and pressure. The change in this quantity at non-standard state equals its change at the standard state, plus RT times the log of the reaction quotient, which can be used to derive the Nernst equation. This extensive quantity can be calculated by summing (*) chemical potential over particle number. The change in this quantity at standard state equals negative RT times the log of the equilibrium constant. In general, it equals enthalpy minus temperature times entropy. For 10 points, name this quantity which determines if a process is spontaneous, named for an American chemist.
The residual of this quantity equals RT times the log of the fugacity coefficient.
Gibbs free energy [or G; prompt on free energy]