Abstract
The adsorption of acetic acid has been studied on platinum, gold and rhodium electrodes from aqueous electrolytes. On the platinum electrode, the evidences have been presented that in the double layer region of the electrode potentials: (i) the undissociated acetic acid molecule is adsorbed, (ii) the adsorption process is reversible and (iii) the adsorption occurs in the second ad-layer of the interfacial region, ie on the top of the chemisorbed water molecules. In the hydrogen region, the slow (reductive) chemisorption of this compound has been observed. The similarity in the character of the adsorption of acetic acid in the double layer region of the three electrodes investigated have been shown.
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