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Kinetics and Mechanism of Oxidation of Thiocyanate by Quinquivalent Vanadium in Aqneous Perchlorate Medium

The oxidation kinetics of thiocyanate ion by quinquivalent vanadium in aqueous Perchlorate medium have been investigated at 35 °C under varying proton concentration ranging from 0-2 ··· 1-0 M. A constant ionic strength of \μ is maintained by using sodium Perchlorate as background electrolyte. V(IV) caused a considerable retardation while bisulphate was found to have no effect on the rate of reaction. So as to isolate the effect of quadrivalent vanadium formed during the course of the reaction, all the kinetic runs were performed in the presence of an initial excess concentration of V(IV). The experimental data was consistent with the rate law