A) \[\frac{[C{{u}^{2+}}]\,{{[Ag]}^{2}}}{[Cu]\,[A{{g}^{2+}}]}\]
B) \[\frac{{{\left[ Ag \right]}^{2}}}{{{\left[ Ag_{2}^{+} \right]}^{2}}}\]
C) \[\frac{\left[ C{{u}^{2+}} \right]}{\left[ A{{g}^{+}} \right]}\]
D) \[\frac{\left[ C{{u}^{2+}} \right]}{\left[ Cu \right]}\]
Correct Answer: C
Solution :
For pure solids, pure liquid and gases at 1 atm pressure molar concentration is taken as 1. For the reaction, \[C{{u}_{(g)}}+2Ag_{(aq)}^{+}Cu_{(aq)}^{+}+2A{{g}_{(s)}}\] \[K=\frac{\left[ C{{u}^{2+}} \right]}{{{\left[ A{{g}^{+}} \right]}^{2}}}\]
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