Catalysis by copper (II) in peroxydisulphate oxidation has been
reported for many systems[l-12]. Inmmcient kinetic data do not
provide evidence for the mechanism of the catalytic action[13].
Kinetics of Cu(ll) catalysed oxidation of malic acid by the
peroxydisulphate ion have been studied in order to elucidate the
catalytic role of Cu(II).
