The standard reduction potentials in acidic conditions are 0.77 V and 0.53 V, respectively, for and couples. The equilibrium constant for the reaction: , is ()

Question

The standard reduction potentials in acidic conditions are 0.77 V and 0.53 V, respectively, for $Fe^{3+} \| Fe^{2+}$ and $I_3^- \| I^-$ couples. The equilibrium constant for the reaction: $2Fe^{3+} + 3I^- \rightleftharpoons 2Fe^{2+} + I_3^-$, is ($2.303RT/F = 0.06$)

Prashant Kotian · Accepted Answer

Correct answer: B. The standard cell potential V. The number of electrons transferred is . Using the relation , we get . Therefore, . Therefore, correct answer is B.

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