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CGP EDU Academic Team
Published on: August 13, 2026
The correct option(s) about entropy (S) is(are)
[R = gas constant, F = Faraday constant, T = Temperature]
A
For the reaction, M(s) + 2H + (aq) 
H 2 (g) + M 2+ (aq), if 
, then the entropy change of the reaction is R (assume that entropy and internal energy changes are temperature independent).
H 2 (g) + M 2+ (aq), if , then the entropy change of the reaction is R (assume that entropy and internal energy changes are temperature independent).
B
The cell reaction, Pt(s) H 2 (g, 1bar) | H + (aq, 0.01 m) || H + (aq, 0.1 m) | H 2 (g, 1 bar) | Pt(s), is in an entropy driven process.
C
For racemisation of an optically active compound, 
S > 0.
S > 0.
D
S > 0, for [Ni (H 2 O) 6 ] 2+ + 3 en 
[Ni (en) 3 ] 2+ + 6H 2 O (where en = ethylenediamine).
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(b,c,d)
Incorrect statement.
E cell for the given cell is +ve
Since, 
Correct statement.
Correct statement because racemisation involves formation of a racemic mixture
Correct statement because number of particles are increasing
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