Permanganate Ion Can Oxidize Sulfite in Basic Solution According to the Following

question 129

Short Answer

Permanganate ion can oxidize sulfite in basic solution according to the following equation. The relevant standard reduction potentials are 0.59 V for the manganese compound and -0.92 V for the sulfur compound. Determine the cell potential for the reaction at 298 K with the concentrations in the table.
2MnO₄^-(aq) + 3SO₃^2-(aq) + H₂O(l) $\rightarrow$ 2MnO₂(s) + 3SO₄^2-(aq) +2OH^-(aq) $$\begin{array} { l l } \text { Species } & \text { Concentration } \\\mathrm { MnO } _ { 4 } { } ^ { - } & 0.250 \mathrm { M } \\\mathrm { SO } _ { 3 } { } ^ { 2 - } & 0.356 \mathrm { M } \\\mathrm { SO } _ { 4 } { } ^ { 2 - } & 0.278 \mathrm { M } \\\mathrm { OH } ^ { - } & 0.0222 \mathrm { M }\end{array}$$

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