The Transference Numbers of the Counter-Ions in Montmorillonite Paste as a Function of Water Film Thickness and Electrolyte Concentration

M. Tschapek and A. M. Grazán
Universidad Nactional de Sur, Avenida Alem 925, Bahia Blanca, R. Argentina

Abstract: The transference numbers of the counter ions in montmorillonite paste are determined as a function of the thickness of the water film (h) and of the diffuse double layer (1/κ).

From measured E.M.F. values of a cell with two liquid junction potentials (C′KCl solution-paste-C″KCl solution) and by applying the Henderson equation, the transference numbers t+ were calculated. It is shown that the transference numbers of the counter-ions, t+ → 1 if hK → 0.

Clays and Clay Minerals; April 1973 v. 21; no. 2; p. 97-101; DOI: 10.1346/CCMN.1973.0210205
© 1973, The Clay Minerals Society
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