Balance the following half-reaction

CHEMISTRY · Subjective · A Level · Chemistry · Oxidation, reduction and redox reactions · Oxidation, reduction and redox reactions

Problem

Balance the following half-reaction, which occurs in basic solution, by adding

\mathrm{H_2O}

\mathrm{OH^-}

, and electrons as needed. Provide the fully balanced half-reaction.

\mathrm{MnO_4^- \rightarrow MnO_2}