Effect of changes in solvent structure on proton migration, conductance and ion-pairing of hydrogen chloride in a methanol + methylcyclopentane mixture at 25 °C

Abstract

The molar conductances of solutions of HCl in wet (76% methanol + 24% methylcyclopentane) mixtures at 25 °C have been determined. The data have been analysed by the expanded Fuoss–Hsia equation. The extent of ion-paring and the limiting molar conductances are strongly influenced by water. The pK for the dissociation and the limiting molar conductance in the anhydrous binary solvent system are 1.98 and 170.6, respectively. The percentage excess proton mobility with respect to the potassium ion has also been evaluated.