Consider an electrochemical cell: A(s) ,| ,A^ n+ (aq,2 M) , | ,B^ 2n+ (aq,1 M) ,| ,B(s) . The value of H^ for...

Question

Consider an electrochemical cell: A(s) ,| ,A^ n+ (aq,2 M) , | ,B^ 2n+ (aq,1 M) ,| ,B(s) . The value of H^ for the cell reaction is twice that of G^ at 300 K. If the emf of the cell is zero, the S^ (in J K^ -1 mol^ -1 ) of the cell reaction per mole of B formed at 300 K is _____. (Given: ln(2) = 0.7, R (universal gas constant) = 8.3 J K^ -1 mol^ -1 . H, S and G are enthalpy, entropy and Gibbs energy, respectively.)

Accepted Answer

-11.62

JEE Advanced 2018 Chemistry question

Solution

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