Electrolyte solutions in dimethyl sulphoxide. Part 3.—Rubidium iodide

Abstract

The activity coefficients, equivalent conductivities, ⁸⁷Rb and ¹H magnetic resonance spectra and viscosities of solutions of rubidium iodide in dimethyl sulphoxide have been measured. Anomalies in the activity coefficients above 10^–2 m are attributed to ion-pairing but the equivalent conductivities between 10^–3 and 10^–2 M are adequately accounted for by the equations characteristic of a fully dissociated electrolyte. At higher concentrations the conductivity and viscosity data have been fitted to empirical equations. Both the ⁸⁷Rb and ¹H resonances shifted linearly with concentration.