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 \[{{E}_{cell}}+E_{cell}^{o}-\frac{nRT}{F}\log \frac{{{C}_{1}}}{{{C}_{2}}}\] For \[Zn(s)+C{{l}_{2}}(1\,atm)\xrightarrow{{}}Z{{n}^{2+}}+2C{{l}^{-}}\] Hence, to increase E, \[{{C}_{1}}\] should be decreased and \[{{C}_{2}}\] should be increased ie, \[[Z{{n}^{2+}}]\] should be decreased and \[C{{l}_{2}}\] should be increased.
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