For the reduction half-reaction, bromine (Br2) is being reduced to bromide ions (Br-):
\[ \text{Br}_2(l) + 2e^- \rightarrow 2\text{Br}^-(aq) \]
For the oxidation half-reaction, manganese (Mn2+) is being oxidized to manganese dioxide (MnO2):
\[ \text{Mn}^{2+}(aq)
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