Representation of electrical conductances for polyvalent electrolytes by the quint-viallard conductivity equation. Part 1. symmetrical 2:2 type electrolytes. Dilute aqueous solutions of alkaline earth metal sulfates and transition metal sulfates

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Abstract

Literature values of the electrical conductivities of dilute aqueous solutions of alkaline metal sulfates (BeSO4, MgSO4 , CaSO4, SrSO4) and of transition metal sulfates (MnSO 4, FeSO4 , CoSO4 , NiSO4 , CuSO 4 , 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.

Original languageEnglish
Pages (from-to)1209-1233
Number of pages25
JournalJournal of Solution Chemistry
Volume40
Issue number7
DOIs
StatePublished - 1 Jul 2011

Keywords

  • Alkaline metal sulfates
  • Electrical conductances
  • Ion association constants
  • Limiting conductances
  • Transition metal sulfates

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Physical and Theoretical Chemistry

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