Abstract
Abstract Measurements on the conductance of dilute solutions of sodium Perchlorate, at 35 °C, in water-sulfolane mixtures over the entire solvent composition range are reported. Experimental data were analyzed by the 1965 Fuoss-Onsager-Skinner equations. No detectable ion association was found for this electrolyte, unlike sodium chloride in the same solvent mixtures. The association order KA(Cl-)>KA(ClO4 -) is in contrast with that observed in protic solvents [KA(ClO4 -)>KA(Cl-)] and is similar to that found in aprotic solvents. This shows that in water-sulfolane mixtures, association phenomena are mainly controlled by sulfolane. The lack of transport numbers for water-sulfolane mixtures precludes unambiguous explanations for Waiden products A0η.
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