Summary
The oxidation of selenium(IV) by permanganate has been studied kinetically in acid, neutral and alkaline media. The reaction exhibits unit-order dependence on selenium(IV) and permanganate in all the three media. Manganese(VI) retards the reaction in alkaline medium. The rate-limiting step is the same in all the three media, but the stoichiometry is different, being 2:1 in alkaline medium, 2:3 in neutral medium and 2:5 in acid medium. Evidence has been obtained for a one electron-transfer in the rate-determining step.
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Nadimpalli, S., Rallabandi, R. & Dikshitulu, L.S.A. Kinetics and mechanism of the oxidation of selenium(IV) by permanganate. Transition Met Chem 18, 510–514 (1993). https://doi.org/10.1007/BF00136616
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DOI: https://doi.org/10.1007/BF00136616