Abstract
The results of zeta-potential determination using the electro-osmotic method in dilute (10−3 mol dm−3) solutions of NH4Cl and ZnCl2 and diffusion parameters measured in 20% NH4Cl and 30% ZnCl2 solutions are presented. In both cases cellulosic membrane separators from different manufacturers, already in practical usage in Leclanche cells, were examined. From the measured data, diffusion potentials were calculated and compared with experimental values. Transport numbers calculated from diffusion potentials are compared to values in free solution (i.e. without a membrane). The relevance of these parameters to the role of cellulosic separators in Leclanche-type cells is briefly discussed.
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