The correct option(s) about entropy \( (S) \) is(are)
For the reaction, \( \mathrm{M(s) + 2H^+(aq) \rightarrow H_2(g) + M^{2+}(aq)} \), if \( \dfrac{dE_{\text{cell}}}{dT} = \dfrac{R}{F} \), then the entropy change of the reaction is \( R \) (assume that entropy and internal energy changes are temperature independent).
The cell reaction, \( \mathrm{Pt(s)\,|\,H_2(g,1bar)\,|\,H^+(aq,0.01M)\,||\,H^+(aq,0.01M)\,|\,H_2(g,1bar)\,|\,Pt(s)} \), is an entropy driven process.
For racemization of an optically active compound, \( \Delta S > 0 \).
\( \Delta S > 0 \), for \( \mathrm{[Ni(H_2O)_6]^{2+} + 3\,en \rightarrow [Ni(en)_3]^{2+} + 6H_2O} \) \( \) (where \( en \) \( = \) ethylenediamine).