Аннотация:A model-tyoe interpretation is provided for the adsorption behavior of CF//3COO** minus ions at the mercury electrode in aqueous CF//3COONa plus Na//2SO//4 and CF//3COONa plus NaF solutions. Good agreement between calculation and experiment is obtained for the differential capacity curves, for the degrees of coverage and diffuse-layer charge densities as functions of potential, and for the potential drops across the compact layer as functions of the degree of coverage at different values of electrode charge density.