Journal of The Electrochemical Society · 1966 · 15 citations · 0 references
EngineeringChemistryIon ProcessSolution (Chemistry)Corrosion InhibitionChemical EngineeringEnvironmental ChemistryCorrosionMineral-fluid InteractionAnalytical ChemistryH+ ActivityCorrosion ResistanceIon ExchangeSpectroelectrochemistryHydrogenElectrochemistryCorrosion ProtectionNeutral SaltsH+ ConcentrationChemical Kinetics
The H+ activity of diluted strong acids, such as or , rises by the addition of such neutral salts as , from 10−1 to 10 at constant concentration of the acid. The effect of this increase of activity on the anodic dissolution of Fe, Co, and Ni has been investigated. Fe and Co show the order with respect to the H+ activity, which was found by many other authors with respect to the H+ concentration when stationary measurements were accomplished. In accordance with the Heusler mechanism the order changed to at unstationary measurements. The cathodic process has the order with respect to the H+ concentration and 0.5 with regard to H+ activity changed by addition of neutral salts. The anodic dissolution is influenced by the nature of the cations .