A) 0.90 V
B) 0.30 V
C) 0.38 V
D) 0.52 V
Correct Answer: D
Solution :
[d] \[\begin{align} & \underline{\begin{align} & C{{u}^{+2}}+2{{e}^{-}}\to Cu\,\,\,\,\Delta G_{i}^{{}^\circ } \\ & C{{u}^{+2}}+{{e}^{-}}\to C{{u}^{+}}~~\Delta G_{2}^{{}^\circ } \\ \end{align}} \\ & C{{u}^{+}}+{{e}^{-}}\to Cu\,\,\,\Delta G_{3}^{{}^\circ } \\ \end{align}\] \[\Delta G_{3}^{{}^\circ }=\Delta G_{1}^{{}^\circ }-\Delta G_{2}^{{}^\circ }\] \[-1\times F\times E=-2F\times 0.337-\left( -1\times F\times 0.153 \right)\] \[\Rightarrow E=0.521\,V\]
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