Abstract
Literature values of the electrical conductivities of dilute aqueous solutions of alkaline metal sulfates (BeSO4, MgSO4, CaSO4, SrSO4) and of transition metal sulfates (MnSO4, FeSO4, CoSO4, NiSO4, CuSO4, ZnSO4, CdSO4) were reexamined within the framework of the Quint-Viallard conductivity equations in order to obtain a uniform representation of conductivities. It was observed that the limiting conductances of electrolytes at infinite dilution are very similar irrespective of the applied conductivity equation, whereas the derived ion association equilibrium constants vary considerably. The ion association equilibrium constants are therefore of doubtful physical value and should be treated rather as just fitting parameters.
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