AIPMT MAINS2009Chemistry-Electrochemistry
AIPMT MAINS 2009 Chemistry Electrode Potentials MCQ Question
Type: MCQ-numerical-Medium-Class 12
Given:
(i) Cu²⁺ + 2e⁻ → Cu, E° = 0.337 V
(ii) Cu²⁺ + e⁻ → Cu⁺, E° = 0.153 V
Electrode potential, E° for the reaction, Cu⁺ + e⁻ → Cu, will be:
A
0.90 V
B
0.30 V
C
0.38 V
D
0.52 V
Correct Answer
Option D
Detailed Explanation
The electrode potential for the reaction Cu⁺ + e⁻ → Cu can be calculated using the given potentials: E°(Cu²⁺/Cu) = 0.337 V and E°(Cu²⁺/Cu⁺) = 0.153 V. By subtracting these, E°(Cu⁺/Cu) = 0.337 V - 0.153 V = 0.184 V.
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