| Abstract
| - In this paper a quantitative study of the adsorption of iso-C4H9CN (isovaleronitrile, IVN) at the interfacesbetween Hg and In−Ga alloy (eutectic composition) electrodes and aqueous solutions is described. Theequilibrium charge densities at Hg electrodes were determined from both electrocapillary and impedancemeasurements, whereas at the In−Ga electrode only impedance data were available. The adsorptionparameters for IVN, including the standard Gibbs energy of adsorption (ΔGads°), the lateral interactionparameter a, and the limiting Gibbs surface excess (Γmax), were calculated and compared with previousdata relative to the behavior of aliphatic compounds at different interfaces. The experimental results arediscussed in terms of metal−solvent and metal−adsorbate interactions.
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