Question

What are the characteristics of free energy $G$?

Answer 1

The characteristics of free energy G:
1) Free energy is the maximum amount of energy available to a system during a process that can be converted into useful work.
2) $G=H-TS$
$\Delta G=\Delta H-T\Delta S$
It is Gibbs Helmholtz equation.
3) Free energy is a state function.
4) Free energy is extensive property.
5) For spontaneous process $\Delta G<0$
6) For non spontaneous process $\Delta G>0$
7) For equilibrium process $\Delta G=0$
8) For exergonic process $\Delta G<0$
9) For endergonic process $\Delta G>0$