A) \[[Z{{n}^{2+}}]\] should be increased
B) \[[Z{{n}^{2+}}]\] should be decreased
C) \[[C{{l}^{-}}]\] should be decreased
D) \[{{P}_{C{{l}_{2}}}}\] should be decreased
Correct Answer: B
Solution :
According to Nemsts equation, \[{{E}_{cell}}={{E}^{o}}_{cell}-\frac{nRT}{F}\log \frac{{{C}_{1}}}{{{C}_{2}}}\] Here, \[{{C}_{1}}=[Z{{n}^{2+}}],{{C}_{2}}=[C{{l}^{-}}]\] Hence, for \[{{E}_{cell}}\] to be maximum. \[{{C}_{1}}\] (i.e., \[[Z{{n}^{2+}}]\]) should be decreased.
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