Thermodynamic properties of ternary aqueous electrolyte solutions

Luminita Grigore; Aurelia Meghea; Ovidiu Grigore; Rodrigo Martins

doi:10.1080/00319109908031445

Thermodynamic properties of ternary aqueous electrolyte solutions

Luminita Grigore, Aurelia Meghea, Ovidiu Grigore, Rodrigo Martins

UNINOVA-Instituto de Desenvolvimento de Novas Tecnologias

Research output: Contribution to journal › Article

Abstract

In previous papers the mean excess chemical potential, μ₁(E), in ternary systems of the type I sulphate + II sulphate + H₂O, at 25°C was determined. Results obtained for systems with CuSO₄(I), and ZnSO₄(I) respectively, pointed out an obvious disparity between their behaviours. They show the existence of some important association phenomena partially accounting for the substantial deviations from ideal behaviour. The ternary sulphate systems (CuSO₄ + Me(I,II)SO₄ + H₂O; ZnSO₄ + Me(I,II)SO₄ + H₂O) studied were characterized against the binaries of the same ionic strength, experimental data being obtained using both e.m.f. and spectrophotometric methods. Deviations from the ideal behaviour were discussed in terms of thermodynamic excess functions and association constants. A comparative study between the results obtained with the two above mentioned methods is presented.

Original language	English
Pages (from-to)	409-428
Number of pages	20
Journal	Physics and Chemistry of Liquids
Volume	37
Issue number	4
DOIs	https://doi.org/10.1080/00319109908031445
Publication status	Published - 1999

Keywords

Association constants
E.m.f. method
Spectrophotometry
Ternary aqueous systems

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title = "Thermodynamic properties of ternary aqueous electrolyte solutions",

abstract = "In previous papers the mean excess chemical potential, μ1(E), in ternary systems of the type I sulphate + II sulphate + H2O, at 25°C was determined. Results obtained for systems with CuSO4(I), and ZnSO4(I) respectively, pointed out an obvious disparity between their behaviours. They show the existence of some important association phenomena partially accounting for the substantial deviations from ideal behaviour. The ternary sulphate systems (CuSO4 + Me(I,II)SO4 + H2O; ZnSO4 + Me(I,II)SO4 + H2O) studied were characterized against the binaries of the same ionic strength, experimental data being obtained using both e.m.f. and spectrophotometric methods. Deviations from the ideal behaviour were discussed in terms of thermodynamic excess functions and association constants. A comparative study between the results obtained with the two above mentioned methods is presented.",

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author = "Luminita Grigore and Aurelia Meghea and Ovidiu Grigore and Rodrigo Martins",

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T1 - Thermodynamic properties of ternary aqueous electrolyte solutions

AU - Grigore, Luminita

AU - Meghea, Aurelia

AU - Grigore, Ovidiu

AU - Martins, Rodrigo

PY - 1999

Y1 - 1999

N2 - In previous papers the mean excess chemical potential, μ1(E), in ternary systems of the type I sulphate + II sulphate + H2O, at 25°C was determined. Results obtained for systems with CuSO4(I), and ZnSO4(I) respectively, pointed out an obvious disparity between their behaviours. They show the existence of some important association phenomena partially accounting for the substantial deviations from ideal behaviour. The ternary sulphate systems (CuSO4 + Me(I,II)SO4 + H2O; ZnSO4 + Me(I,II)SO4 + H2O) studied were characterized against the binaries of the same ionic strength, experimental data being obtained using both e.m.f. and spectrophotometric methods. Deviations from the ideal behaviour were discussed in terms of thermodynamic excess functions and association constants. A comparative study between the results obtained with the two above mentioned methods is presented.

AB - In previous papers the mean excess chemical potential, μ1(E), in ternary systems of the type I sulphate + II sulphate + H2O, at 25°C was determined. Results obtained for systems with CuSO4(I), and ZnSO4(I) respectively, pointed out an obvious disparity between their behaviours. They show the existence of some important association phenomena partially accounting for the substantial deviations from ideal behaviour. The ternary sulphate systems (CuSO4 + Me(I,II)SO4 + H2O; ZnSO4 + Me(I,II)SO4 + H2O) studied were characterized against the binaries of the same ionic strength, experimental data being obtained using both e.m.f. and spectrophotometric methods. Deviations from the ideal behaviour were discussed in terms of thermodynamic excess functions and association constants. A comparative study between the results obtained with the two above mentioned methods is presented.

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KW - E.m.f. method

KW - Spectrophotometry

KW - Ternary aqueous systems

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