Kinetics and Mechanism of Silver Dissolution in Aqueous Sodium Nitrate

Resumo

The kinetics of the electrochemical oxidation–reduction of silver in aqueous solutions of sodium nitrate was studied by potentiometry. The effect of the electrolyte concentration and temperature and sweep rate on the electrochemical behavior of silver was studied. To characterize the mechanism of silver electrooxidation, the following kinetic parameters were calculated: ion transport number (α_n), diffusion coefficient (D), heterogeneous rate constant of the electrode process (K_s), and effective activation energy of the process (E_ef). The data obtained may be of interest to specialists in the field of electrochemistry.