A) \[0.37\times {{10}^{-6}}M\]
B) \[0.37\times {{10}^{-8}}M\]
C) \[0.42\times {{10}^{-6}}M\]
D) \[0.42\times {{10}^{-8}}M\]
Correct Answer: B
Solution :
For simultaneous deposition of two metals present in a solution, the emf for their half-cell . must be equal. \[{{E}_{(C{{u}^{2+}}/Cu)}}={{E}_{(A{{g}^{+}}/Ag)}}\] \[{{E}^{\circ }}_{(C{{u}^{2+}}/Cu)}-\frac{0.0591}{2}\log \frac{1}{[A{{g}^{+}}]}\] \[={{E}^{\circ }}_{(A{{g}^{2+}}/Ag)}-0.0591\,\log \frac{1}{[A{{g}^{+}}]}\] Solving; \[[A{{g}^{+}}]=0.37\times {{10}^{-8}}M\]
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