Abstract
Abstract Ethylamine at concentrations lower than 0.5 him in N,N-dimethylformamide gives a diffusion-controlled anodic wave due to the reversible oxidation of the mercury to a 1:2 complex of mercury(II) with the amine. At higher concentrations, another anodic wave appears at a potential less positive than the main wave; this has been attributed to the adsorption of the oxidation product on the mercury electrode. The adsorption prewave was analyzed on the basis of Brdicka’s theory, in which the Langmurian adsorption was assumed. It was shown that the nature of the prewave can be well interpreted on the additional assumption that the adsorption coefficient of the adsorbed complex decreases exponentially as the electrode potential becomes more positive.
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