A) \[[Z{{n}^{2+}}]>[C{{u}^{2+}}]\]
B) \[[Z{{n}^{2+}}]<[C{{u}^{2+}}]\]
C) Zn electrode has twice the surface of Cu electrode
D) mol ratio of \[Z{{n}^{2+}}:\,C{{u}^{2+}}\] is \[2:1\]
Correct Answer: A
Solution :
\[{{E}_{cell}}=E_{cell}^{o}=-\frac{0.0591}{2}\log \frac{[Z{{n}^{2+}}]}{[C{{u}^{2+}}]}\] \[=1.1-\frac{0.0591}{2}\log \frac{[Z{{n}^{2+}}]}{[C{{u}^{2+}}]}\] \[{{E}_{cell}}<1.1\] if \[\frac{[Z{{n}^{2+}}]}{[C{{u}^{2+}}]}>1\]
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