Abstract
The problem of the irreversibility of the adsorption of Cl − ions on platinum has been studied by a tracer method described previously. The mobility of adsorbed Cl − ions has been observed in the following experiments: in the exchange of adsorbed labelled Cl − with nonlabelled dissolved Cl − ions; in the desorption caused by the rinsing of the electrode; in the displacement of adsorbed Cl − ions by Br − and I − ions; in the simultaneous adsorption of Cl − ions and other halide ions. In the light of these results the views based on the assumption of irreversibility have been criticized.
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