Consider an electrochemical cell: A(s)|A^{n+}(aq,2M)||B^{2n+}(aq,1M)|B(s),The value of \DeltaH^0 for the cell reaction is twice that of \DeltaG^0 at 300K.If the emf of the cell is zero, the \DeltaS^0 (in JK^{-1}mol^{-1}) of the cell reaction per mole of B formed at 300K is___ (Given: \text{\ln}(2)=0.7,R(universal gas constant)=8.3JK^{-1}mol^{-1}).H,S and G are enthalpy, entropy and Gibbs energy, respectively.) [JEE Adv 2018 P2]

Electrochemistry

Section: Chemistry

Question : 13 of 30

Marks: +1, -0

Consider an electrochemical cell:

A(s)|An+(aq,2M)||B2n+(aq,1M)|B(s)

,The value of ΔH0 for the cell reaction is twice that of ΔG0 at 300K.If the emf of the cell is zero, the ΔS0 (in JK−1mol−1) of the cell reaction per mole of B formed at 300K is___
(Given: ln(2)=0.7,R(universal gas constant)=8.3JK−1mol−1).H,S and G are enthalpy, entropy and Gibbs energy, respectively.)

[JEE Adv 2018 P2]

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