The balanced half reaction for reduction of the permanganate ion, to manganese ion, is shown below:
[tex]MnO_{4^{-} }[/tex] + 8[tex]H^{+}[/tex] + 5e- → [tex]Mn^{2+}[/tex] + [tex]H_{2} O[/tex]
The portion of an overall reaction that represents either an oxidation or a reduction separately is known as a half-reaction.
A redox reaction can only be fully described by two half-reactions, one oxidation and one reduction.
The chemical compound that contains the manganate (VII) ion is known as permanganate. Because manganese is in the +7 oxidation state and is rapidly reduced and oxidised by other elements, the permanganate(VII) ion is a potent oxidising agent.
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