Kinetics and mechanism of oxidation of  l ‐ascorbic acid by peroxomonophosphate in aqueous acid medium | Zendy

Soni Narendra K. | Zendy; Sailani Riya | Zendy; Khandelwal C. L. | Zendy; Sharma P. D. | Zendy

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Kinetics and mechanism of oxidation of l ‐ascorbic acid by peroxomonophosphate in aqueous acid medium

Author(s) -

Soni Narendra K.,

Sailani Riya,

Khandelwal C. L.,

Sharma P. D.

Publication year - 2013

Publication title -

international journal of chemical kinetics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.341

H-Index - 68

eISSN - 1097-4601

pISSN - 0538-8066

DOI - 10.1002/kin.20741

Subject(s) - chemistry , dehydroascorbic acid , ascorbic acid , kinetics , aqueous solution , rate equation , stoichiometry , reaction mechanism , inorganic chemistry , reaction rate , catalysis , organic chemistry , physics , food science , quantum mechanics

The kinetics of oxidation of l ‐ascorbic acid (H 2 A) by peroxomonophosphate in acid aqueous medium has been studied. The stoichiometry of the reaction corresponds to the reaction as represented by the equation 1where A is dehydroascorbic acid. The reaction is second order versus first order with respect to each reactant. The rate is retarded by hydrogen ion concentration. A plausible reaction mechanism has been suggested. The derived rate law (2) from such a mechanism accounts for all experimental observations: 2Such pH dependence is somewhat different from that observed in the case of metal ion oxidants. © 2012 Wiley Periodicals, Inc. Int J Chem Kinet 45: 41–16, 2013

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