Thermodynamic study of corrosion of zinc metal in dioxan-water mixture in hydrochloric acid

The corrosion of pure zinc in 0.1 N HC1 has been investigated in aquo-organic solvent media in the temperature range of 25-50°C and in 0-70% by volume organic cosolvent. The data has been analysed to obtain kinetic activation parameters for reaction in corresponding mixtures. The determined isokinetic temperature indicates that the reaction is enthalpy controlled. The corrosion currenti[corr]is correlated to the dielectric constant [D]. Medium effects on reaction rates and mechanisms are briefly discussed