NEET2017Chemistry-Electrochemistry
NEET 2017 Chemistry Nernst Equation MCQ Question
Type: MCQ-numerical-Medium-Class 12
In the electrochemical cell, Zn | ZnSO₄(0.01 M) || CuSO₄(1.0 M) | Cu, the emf of this Daniel Cell is E₁. When the concentration of ZnSO₄ is changed to 1.0 M and that of CuSO₄ changed to 0.01 M, the emf changes to E₂. From the following, which one is the relationship between E₁ and E₂? (Given, RT/F = 0.059)
A
E₁ < E₂
B
E₁ = E₂
C
E₂ = 0 ≠ E₁
D
E₁ > E₂
Correct Answer
Option D
Detailed Explanation
The Nernst equation shows that increasing the concentration of the reactant (Zn²⁺) and decreasing the concentration of the product (Cu²⁺) will decrease the cell potential.
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