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Question

Equilibrium constant $$ (K_c) $$ for the given cell reaction is $$ 10 $$. calculate $$ E^{\circ}_{cell} $$ .
$$ A(s) + B^{2+}(aq) \rightleftharpoons A^{2+} (aq) + B(s) $$

Solution
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$$ A (s) + B^{2+} (aq) \, \, \rightleftharpoons\, \, A^{2+}(aq) + B(s) $$
Here , , $$ n = 2 , K_c = 10 $$
$$ E^{o}_{cell} = \dfrac{0.059}{n} \times log \,K_c $$
$$ E^{o}_{cell} = \dfrac{0.059}{n} \times log\,10 = 0.0295\,V $$

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