KINETICS OF COPPER(II) OXIDE DISSOLUTION - THE INFLUENCE OF THE ELECTRICAL DOUBLE-LAYER

The influence of solution pH, solution composition, and the nature of several chelating agents on the dissolution of copper(II) oxide is inv estigated. It is shown that changes in order of the oxide dissolution rate with pH as well as the effect of the medium redox potential and t he chelating agent nature on the dissolution process may be explained in light of the concepts on the structure of the ionic part of the ele ctrical double layer at the oxide-electrolyte interface. A mechanism f or the dissolution of copper(II) oxides in the presence of chelating a gents is proposed.