Q80 · CSIR-NET Chemistry, June 2013

Paper: CSIR-NET June 2013 · Subject: Physical Chemistry · Chapter: Electrochemistry · Topic: Nernst Cells · Marks: 2 · Difficulty: Medium

Which is correct Nernst equation for redox reaction $O+n e \rightleftharpoons$ ?

(a)$E=E^{o}-\frac{R T}{n F} \ln \frac{[O]}{[R]}$

(b)$\frac{[O]}{[R]}=e^{\frac{n F}{R T}\left(E-E^{o}\right)}$

(c)$\frac{[O]}{[R]}=e^{-\frac{n F}{R T}\left(E-E^{o}\right)}$

(d)$\frac{[O]}{[R]}=e^{\frac{R T}{n F}\left(E-E^{o}\right)}$

Answer

Answer: B ✓ checked by 4AB · confidence high

Explanation

E = E° + (RT/nF) ln([O]/[R]), so [O]/[R] = e^(nF(E−E°)/RT) (b).

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