Electrochemical cells

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By Expert Faculty of Sri Chaitanya

Question

If K_c for the reaction
${Cu}^{2 +} (aq) + {Sn}^{2 +} (aq) ⟶ {Sn}^{4 +} (aq) + Cu (s)$
at 25° C is represented as 2.6 × 10^y then find the value of y.
$(Given : E_{{Cu}^{2 +} ∣ Cu}^{\circ} = 0 .34 V; E_{{Sn}^{4 +} ∣ {Sn}^{2 +}}^{\circ} = 0 .15 V)$

Moderate

Solution

$K_{C} = 10^{\frac{2 (0 .34 - 0 .15)}{0 .0591}} = 2 .6 \times 10^{6}$

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