Kinetics and mechanism of oxidation of hypophosphorous acid by peroxomonosulphate in acid aqueous medium

The reaction is second order – first order with respect to each reactant. Rate is independent of ionic strength, hydrogen ion concentration benzene and t-butyl alcohol, respectively. The possibility of any involvement of OH and SO−4 free radicals has been eliminated. Activation parameters such as energy and entropy of activation have been calculated to be (75±5) kJ mol−1 and (−45±2) J K−1 mol−1, respectively. A probable reaction mechanism has been suggested.