Add time:08/12/2019         Source:sciencedirect.com

The reduction of MnO4− in nitric, perchloric and sulphuric acids on a bubbling platinum electrode and the influence of the acid anion on the behaviour of the permanganic ion in the presence of Mn(II) were studied. The rôle of Mn(II) and Mn (III) in the permanganate reduction process was fully investigated. Evidence is given for the formation of an Mn(III)-acid complex in sulphuric and perchloric acids. The presence of a surface film of MnMnO3 on the platinum electrode and its reduction were observed and studied.

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