Kinetic and analytical investigations of the chlorate and iodate oxidations of vanadium (IV) in a perchloric acid medium

Abstract

Kinetic studies of the chlorate and iodate oxidations of vanadium(IV) in perchloric acid have shown that the rates of the reactions are described by two different equations. Possible mechanisms for the two reactions are described and values for the rate constants and equilibrium constants involved in the reactions are reported, together with ionic strength and temperature dependence data for the two rate constants. The feasibility of using either the chlorate or the iodate oxidation of vanadium(IV) as a titrimetric reaction is discussed in relation to both the kinetic results obtained, and to similar data reported previously for the bromate oxidation of vanadium(IV).