# Given that the standard potentials

Question:

Given that the standard potentials $\left(\mathrm{E}^{\circ}\right)$ of $\mathrm{Cu}^{2+} / \mathrm{Cu}$ and $\mathrm{Cu}^{+} / \mathrm{Cu}$ are $0.34 \mathrm{~V}$ and $0.522 \mathrm{~V}$ respectively, the $\mathrm{E}^{\circ}$ of $\mathrm{Cu}^{2+} / \mathrm{Cu}^{+}$is :

1. $+0.158 \mathrm{~V}$

2. $0.182 \mathrm{~V}$

3. $-0.182 \mathrm{~V}$

4. $-0.158 \mathrm{~V}$

Correct Option: 1

Solution: