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Electron transfer reactions of V(IV) with Cl(I), Br(I) and I(I). A kinetic study
Author(s) -
Radhakrishnamurti P. S.,
Janardhana C.,
Behera G. P.,
Mohanty G. K.
Publication year - 1982
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.550140708
Subject(s) - chemistry , perchloric acid , succinimide , acetic acid , aqueous solution , solvent , kinetics , inorganic chemistry , reaction rate , chloramine t , medicinal chemistry , catalysis , organic chemistry , physics , quantum mechanics
A kinetic study on the oxidation of V(IV) by chloramine‐T (CAT) at pH 6.85 by N ‐bromo succinimide (NBS) in aqueous acetic acid–perchloric acid media and by N ‐iodo succinimide (NIS) in aqueous perchloric acid medium has been carried out. In all the systems studied the order with respect to the oxidant is unity. NBS and CAT oxidation reactions exhibited Michaelis–Menten type kinetics, and the NIS study indicated unit dependence on [substrate]. Independence on acidity has been observed in the case of CAT and NBS reactions, but NIS reactions exhibited inverse unit dependence on [acid]. Novel solvent influences have been noticed in the case of CAT reactions, but with NIS and NBS reactions retardation in the rate has been observed with an increase in the percentage of acetic acid. Plausible mechanisms consistent with the results have been postulated, and suitable rate laws in consonance with the postulated mechanisms have been derived.