CHRONOCOULOMETRIC MEASUREMENT OF CHEMICAL REACTION RATES . ECE MECHANISM AT PLANE AND SPHERICAL ELECTRODES

Chronocoulometry has been applied to the measurement of the kinetics of coupled homogeneous chemical reactions of the ECE type at spherical electrodes. Theoretical expressions have been derived and tested with the p-nitrophenol and the p-nitrosophenol systems. Direct comparisons of chronocoulometric and chronoamperometric results obtained simultaneously have been made and the relative merits of the two techniques have been discussed. These comparisons offer support to the chronocoulometric technique as a useful tool for the measurement of kinetic parameters of coupled chemical reactions.