The thermodynamic properties of electrolyte solutions can be determined from the measurements of the voltage between electrodes reversible to both ions.
Lars Onsager
I have received the greatest honor in my life - and the greatest surprise. Never did I dream that the Nobel Prize could be awarded for the reciprocal relations.
Estimates of the ionic mobilities vary over a considerable range; but in any event, the positive ionic defect is much more mobile in the solid than in the liquid, and its mobility varies very little with the temperature.
