The correct option(s) about entropy ( ) is(are)

CHEMISTRY · Single correct · A Level · Chemistry · Thermodynamics · Thermodynamics

Problem

The correct option(s) about entropy (SS) is(are). (RR = gas constant, FF = Faraday constant, TT = Temperature.) (A) For the reaction, M(s)+2H+(aq)→H2(g)+M2+(aq)\text{M}(s)+2\text{H}^+(aq)\rightarrow \text{H}_2(g)+\text{M}^{2+}(aq), if dEcelldT=RF\frac{dE_{\text{cell}}}{dT}=\frac{R}{F}, then the entropy change of the reaction is RR (assume that entropy and internal energy changes are temperature independent). (B) The cell reaction, Pt(s)∣H2(g,1 bar)∣H+(aq,0.01 M)∣∣H+(aq,0.1 M)∣H2(g,1 bar)∣Pt(s)\text{Pt}(s)|\text{H}_2(g,1\,\text{bar})|\text{H}^+(aq,0.01\,\text{M})||\text{H}^+(aq,0.1\,\text{M})|\text{H}_2(g,1\,\text{bar})|\text{Pt}(s), is an entropy driven process. (C) For racemization of an optically active compound, ΔS>0\Delta S>0. (D) ΔS>0\Delta S>0, for [Ni(H2O)6]2++3 en→[Ni(en)3]2++6H2O[\text{Ni}(\text{H}_2\text{O})_6]^{2+}+3\,\text{en}\rightarrow [\text{Ni}(\text{en})_3]^{2+}+6\text{H}_2\text{O} (where en = ethylenediamine).

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