Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
Reinvestigation of the Electrochemical Reduction of KMnO4
San-Chung LinYung-Yun WangChi-Chao WanJ. -Cheng Chang
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1993 Volume 66 Issue 11 Pages 3372-3376

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Abstract

Investigating the electrochemical reduction behavior of MnO4, we determined the consecutive reduction/oxidation potentials of MnO4 by the cyclic voltammetric method. We have also confirmed that MnO42− is reduced into MnO43−. We then investigated the cause of the generation of MnO2 on the electrode surface with the rotating ring-disk electrode method. The reversibility of the reduction of MnO4 depends on the concentration of KMnO4 and KOH. Reversibility increases when the concentration of KOH increases, but the reversibility decreases when the concentration of KMnO4 increases. The reaction rate of MnO4/MnO42− follows the law:

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© 1993 The Chemical Society of Japan
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