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Thermodynamics

# S1: For the process to be spontaneous, both $\Delta G$ as well as $\Delta S$ has to be less than zero. S2: For spontaneous change, $\Delta S_{Total} > 0.$

$\begin {array} {1 1} (A)\;\text{If both S1 & S2 are correct and S2 is correct explanation of S1.} \\ (B)\;\text{If both S2 & S1 are correct but S2 is not correct explanation of S1.} \\ (C)\;\text{If S1 is correct but S2 is wrong.} \\ (D)\; \text{If S1 is wrong but S2 is correct.} \end {array}$

Can you answer this question?

If both $\Delta G$ and $\Delta S$ are zero, then it doesn’t hold for the criterion of spontaneity ,i.e, $-T \Delta S = \Delta G$
Ans : (D)
answered Mar 20, 2014