Studies on self and electrolyte diffusion in cesium halides

Studies on Liesegang rings of cobalt hydroxide in 1% agar gel medium

“…Further, in the graph of D vs √C it is seen that the minimum in the experimental curve occurs at 0.05 M which is against the theoretical prediction. Similar trend was observed in different systems reported from our research laboratory [5,11]. As the concentration increases, self energy of the central ion also increases [12].…”

“…The electrolyte diffusion coefficient of CoCl 2 was measured at different concentrations using 1% agar gel. The diffusion coefficients were measured using zone diffusion technique the details of which are described in a previous paper [5].…”

Tracer Diffusion of Cr3+ Ions in Agar Gel Media Containing Transition-Metal Sulfates

“…It is also evident from the figures that at higher concentrations, the experimental values are not only larger than the theoretical ones but also show a change in the trend in the plots of D exptl versus C. The measured values of the diffusion coefficients increase with concentration, and this reversal in the trend of diffusion coefficient with concentration gives rise to a minimum in the curve. The occurrence of such minima in D-versus-C curves has been reported by several workers both in gel [14][15][16] and pure aqueous media. [17][18][19] The occurrence of a minimum in the D-versus-C plot can be explained qualitatively on the basis of Wang's model, 17 which considers the changes in the physical properties taking place at the microscopic level with increasing electrolyte concentration.…”

“…The measured values of the diffusion coefficients increase with concentration, and this reversal in the trend of diffusion coefficient with concentration gives rise to a minimum in the curve. The occurrence of such minima in D -versus-√ C curves has been reported by several workers both in gel − and pure aqueous media. − …”