Abstract
The specific adsorption of anions (HSO4 −, Cl−) present in low concentration (c < 10−3 mol dm−3) was studied by radiotracer techniques in the course of the reduction of dichromate (chromate) species in 1 mol dm−3 HClO4 supporting electrolyte. In accordance with the results of preliminary studies reported earlier, enhancement of the anion adsorption was found, induced by some adsorbed intermediates of the reduction process. Potential dependence of the induced adsorption and its correlation with the reduction rate was investigated. The role of adsorption competition between various anions is discussed. It is concluded that study of the induced anion adsorption could be a tool for the investigation of the sorption of intermediates formed in the course of the reduction.
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