Issue 1, 1978

Kinetics and mechanism of oxidation of ascorbic acid by manganese(III) in aqueous acidic perchlorate media

Abstract

The kinetics and mechanism of oxidation of ascorbic acid (H2A) by MnIII in aqueous acidic perchlorate media have been investigated by means of stopped-flow spectrophotometry. The rate law is of the form –½d[MnIII]/dt=(ka+kb[H+]–1)[MnIII][H2A] where the two terms have been assigned to reactions involving the undissociated form of ascorbic acid with Mn3+(aq) and [Mn(OH)]2+(aq) respectively. Comparison with similar reactions involving benzenediols suggests some conclusions on the reduction potentials and the oxidation mechanism of ascorbic acid.

Article information

Article type
Paper

J. Chem. Soc., Dalton Trans., 1978, 61-63

Kinetics and mechanism of oxidation of ascorbic acid by manganese(III) in aqueous acidic perchlorate media

E. Pelizzetti, E. Mentasti and E. Pramauro, J. Chem. Soc., Dalton Trans., 1978, 61 DOI: 10.1039/DT9780000061

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