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Kinetics and mechanism of the oxidation of selenium(IV) by permanganate

✍ Scribed by Sridevi Nadimpalli; Rambabu Rallabandi; L. S. A. Dikshitulu

Publisher: Springer
Year: 1993
Tongue: English
Weight: 444 KB
Volume: 18
Category: Article
ISSN: 0340-4285
DOI: 10.1007/bf00136616

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✦ Synopsis

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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