ADSORPTION OF ALIPHATIC-ALCOHOLS AND ACIDS ON A RENEWABLE CADMIUM ELECTRODE

The adsorption parameters of aliphatic alcohols and acids were obtaine d as functions of temperature at a polycrystalline cadmium electrode r enewable by cutting. The thermodynamic characteristics of adsorption w ere found to be linear functions of the number of methyl groups. The v ariation of the free energy of adsorption with chain length was mainly determined by its entropy component. The contribution of a methyl gro up to the free energy of adsorption was identical for the different ad sorbate classes. In the case of carboxylic acids, a specific interacti on of the functional group with the electrode surface occurred.