Abstract
Peculiarities of the argentite (α-Ag2S) electrode potential settling in acetic acid-acetate solutions are revealed by electroless chronopotentiometry, voltammetry at low polarization, and measuring the rim (wetting) angle. The process rate and the rate constant for the chalcogenide dissolution in a pre-equilibrium state are calculated from the self-dissolution current and the potential transient, respectively. The zero charge potential is found; the pH effect on the above parameters is revealed. It is shown that the potential-determining reaction involves the metal, rather than sulfide, ions.
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