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

Alexander Apelblat

doi:10.1007/s10953-011-9720-4

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

Alexander Apelblat

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

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 language	English
Pages (from-to)	1209-1233
Number of pages	25
Journal	Journal of Solution Chemistry
Volume	40
Issue number	7
DOIs	https://doi.org/10.1007/s10953-011-9720-4
State	Published - 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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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.",

keywords = "Alkaline metal sulfates, Electrical conductances, Ion association constants, Limiting conductances, Transition metal sulfates",

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Apelblat, A 2011, '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', Journal of Solution Chemistry, vol. 40, no. 7, pp. 1209-1233. https://doi.org/10.1007/s10953-011-9720-4

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. / Apelblat, Alexander.
In: Journal of Solution Chemistry, Vol. 40, No. 7, 01.07.2011, p. 1209-1233.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - 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

AU - Apelblat, Alexander

PY - 2011/7/1

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N2 - 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.

AB - 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.

KW - Alkaline metal sulfates

KW - Electrical conductances

KW - Ion association constants

KW - Limiting conductances

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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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