Chemistry

Problem

Calculate the equilibrium constant for the reaction,

2\text{Fe}^{3+} + 3\text{I}^- \rightleftharpoons 2\text{Fe}^{2+} + \text{I}_3^-

. The standard reduction potentials in acidic conditions are 0.77 and 0.54V respectively for

\text{Fe}^{3+} / \text{Fe}^{2+}

and

\text{I}_3^- / \text{I}^-

couples.