Reaction of SO4- with Fe2+, Mn2+ and Cu2+ in aqueous solution

Abstract

The oxidation of Fe2+, Mn2+ and Cu2+ to the corresponding trivalent ions by SO4- has been studied in aqueous solution at pH 3–5 using pulse radiolysis to generate SO4-. For Fe2+ the reaction has a negative energy of activation of -(18±2) kJ mol-1 at low ionic strength, and kobs shows a very small dependence on ion