Hydrogen ion mobility in aqueous electrolyte solutions. Comparison of polarographic and diaphragm cell methods

Abstract

Results for the diffusion coefficient of the hydrogen ion in aqueous solutions of the chlorides, bromides and iodides of sodium and potassium, and tetrabutylammonium bromide obtained from polarography using the modified form of the Ilkovic equation with A= 17 are compared with those determined by the porous diaphragm cell.

The different results obtained by Woolf (using the diaphragm cell method) appear to be due to partially immobilized layers of water in the pores of the sintered glass diaphragm.