Abstract
The results of measurements carried out at different temperatures concerning the kinetic process of the electroreduction of Zn 2+ ions on mercury electrode in the presence of sodium 1-decanesulfonate showed the two-step character of the electrode process and accelerating influence of sodium 1-decanesulfonate on the rate of Zn 2+ electroreduction of the investigated systems. The values of rate constants as determined for successive steps in the investigated temperature range provided evidence that the transfer of the first electron is the step which determines the rate of the whole process. The catalytic activity of sodium 1-decanesulfonate was confirmed by the decrease of overall enthalpies of activation which means the decrease of the activation barrier of the first electron transfer. In order to better understand the mechanism of Zn 2+ ions electroreduction in the presence of sodium 1-decanesulfonate the IE and IA mechanisms are discussed.
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