The surface phase at the ideal polarized mercury electrode. IV. Determination of molar entropies of adsorption of specifically adsorbed halide ions

Abstract

Differential capacitances are measured as a function of temperature at the ideal polarized Hg electrode in systems of mixed sodium halides at ionic strength J = 10−1 mol kg−1. A quasi-thermodynamic treatment is presented according to which excess entropies of adsorption in the inner layer are determined. The formation entropy of the inner layer and the water and ion molar entropies of adsorption are presented for a range of moderate and small ionic surface coverages.