Potentiostatic techniques have been employed to study the polarization behaviour of pure silver in 0·IN KNO3 solutions. An extensive cathodic Tafel region was observed in the polarization curves in pure electrolyte. The presence of aliphatic acids (n-butyric and n-caproic) in the electrolyte changed the shape of these curves, producing plots that did not conform to the: Tafel equations. The non-Tafel nature of these polarization curves has been correlated with changes in the electrosorption characteristics of acid anions in the vicinity of the potential of zero charge of silver, which was determined using meniscus rise measurenlents.
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