Shift of the standard potential scale and changes of surface potentials between water and some non-aqueous solvents

Abstract

Kenrick's method has been used to obtain real free energies of solvation wΔ sα i of H + and CI − in water—ethanol and water—DMF solutions. The difference of the surface potentials (χ H 2O − χ*) has been determined by the extrapolation of the differences of the real free energies of solvation of ions in water and in the mixed solvents as a function of the normal electrode potentials (E° − E°*) Ag/AgCl. The shift of the potential scale wΔ sμ H+ θ in the investigated solvents has been de- termined in the same way.