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STANDARDChemistry-Electrochemistry

STANDARD Chemistry Nernst Equation MCQ Question

Type: MCQ-numerical-Medium-Class 12

Find the emf of the cell in which following reaction takes place at 298 K Ni(s) + 2Ag⁺(0.001 M) → Ni²⁺(0.001 M) + 2Ag(s) Given that E°cell = 10.5 V, 2.303RTF=0.059\frac{2.303RT}{F} = 0.059 at 298 K

A

1.0385 V

B

1.385 V

C

0.9615 V

D

1.05 V

Correct Answer

Option C

Detailed Explanation

According to Nernst equation, E = E°cell - 0.059nlog⁡[Ni2+][Ag+]2\frac{0.059}{n} \log \frac{[Ni^{2+}]}{[Ag^{+}]^2}. Given E°cell = 1.05 V, the calculation gives E = 0.9615 V.

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