Kinetics of the manganese(III)–vanadium(IV) electron-transfer reaction in aqueous perchlorate solution

Abstract

The rate law d[V^V]/dt=k_obs[V^IV][Mn^III] holds for the range 5–20° and 0·8–3·0M-HClO₄, k_obs being 9·2 × 10³ l. mole^–1 min.^–1 at 20° and 3M. The kinetic data provide further evidence of the appreciable hydrolysis of manganese(III), in the [HClO₄]-dependence of k_obs. Rate constants for reactions of vanadium(IV) with several cationic oxidants are shown to follow just the same sequence as those for the corresponding reactions of iron(II).