Chemistry — Disproportionation

\text{one species is both oxidised and reduced}

\text{Cl}_2 + 2\text{OH}^- \rightarrow \text{Cl}^- + \text{ClO}^- + \text{H}_2\text{O}

2\text{Cu}^+ \rightarrow \text{Cu} + \text{Cu}^{2+}

\text{single element} \rightarrow \text{two products}