Oxidation of Co(II) by ozone and reactions of Co(III) in solutions of sulfuric acid

Resumo

Reactions of the oxidation of bivalent cobalt ions by ozone, of the spontaneous decomposition of trivalent cobalt, and of interactions between Co(III) and chloride ions in solutions of sulfuric acid are studied. The order and rate constant of the process of decomposition of Co(III) are determined. Information on the kinetics of the interaction between Co(III) and Cl^– is obtained. Kinetic patterns of the accumulation of Co(III) during the ozonation of solutions of CoSO₄ in sulfuric acid are explained. Molar absorption coefficients of Co(III) and Co²⁺ ions in the visible range of wavelengths are determined.