1993 Volume 66 Issue 11 Pages 3372-3376
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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