Kinetics and Mechanistic Studies of Oxidation of V(IV) by ICl and IBr in Aqueous Acetic Acid and Perchloric Acid Medium

Abstract

A kinetic study on the oxidation of V(IV) by iodine monochloride
(ICI) and iodine monobromide (IBr) in aqueous acetic acid and
perchloric acid media has been carried out. In both the systems
studied the order with respect to oxidant is unity. In case of lCI the
dependence on [substrate] is fractional whereas in [IBr] it is unity.
The order with respect to [H⁺] in ICI and IBr reactions is inverse
fractional. The rate of reaction remains invariant to the change in
composition of a complex between the hydrolysed species of  V(IV)
and the effective species of the oxidant in a reversible equilibrium.