Anion exchange of metal complexes. VIII. The effect of the secondary cation. The zinc-chloride system

Distribution measurements were made of tracer radioactive zinc ions between Dowex-1, quaternary ammonium anion exchange resin, cross-linked by various amounts (2, 4, 8, 10, and 16%) of divinylbenzene, and aqueous solutions of chlorides of lithium, sodium, ammonium, potassium, and cesium, and hydrochloric acid. The invasion of the various electrolytes into the resins has also been measured. Expressing the electrolyte concentrations in terms of activity functions a = mγ_±, and correcting the distribution coefficients for the electrolyte invasion, yielded parallel curves for the variously cross-linked resins. These may be described by a single set of complex formation parameters for the aqueous solutions, the same for all alkali metal chlorides, and one parameter dependent on the cross linking.