Answer:
Option B
Explanation:
The criterion for a spontaneous process is $\triangle $ G <0.
Gibbs free energy is the maximum amount of energy available to a system during a process, that can be converted in to useful work
$\triangle G= \triangle H- T\triangle S$
It is called the Gibbs-Helmholtz equation and useful in predicting the spontaneity of the process
if $\triangle G$ = -ve , the process is spontaneous
if $\triangle $ G=+ve, the process is a non-spontaneous process
If $\triangle$ G= zero , the process is in equilibrium
