Thermodynamic determination of solvation potentials of various metal chlorides by (1,4-dioxane + water) mixtures through EMF measurements

Manjula Spah, Dal Chand Spah, Sooyoung Jun, Seungmoon Lee, Ho Jun Song, Won-Gun Koh, Jin Won Park

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The EMF data of different metal chlorides (2:1 electrolytes) were obtained by using a cell [M X Hg|MCl 2 (m)|AgCl-Ag] at two temperatures. Stock solutions of metal chlorides (CoCl 2 , CuCl 2 and ZnCl 2 ) were prepared by weight in 1,4-dioxane-aqueous mixtures. There was a significant change in the EMF values with change of metal chloride, its concentration and solvents composition. The standard electrode potential (E°) values of the above cell were calculated from the measured EMF of these mixtures. The standard thermodynamic functions (ΔG°, ΔH° and ΔS°) and respective transfer parameters of MCl 2 from water to 20, 45 and 70% dioxane-water mixtures were also evaluated. Equilibrium dissociation constants (K 1 and K 2 ) as well as the degrees of dissociation (α 1 and α 2 ) were obtained by iterative procedures. The data were analyzed in terms of solute-solvent interactions depending on standard and transfer thermodynamic parameters and mean activity coefficients (γ ± ) of electrolytes.

Original languageEnglish
Pages (from-to)17-27
Number of pages11
JournalFluid Phase Equilibria
Volume279
Issue number1
DOIs
Publication statusPublished - 2009 May 15

Fingerprint

Solvation
solvation
Chlorides
Metals
chlorides
Thermodynamics
thermodynamics
Electrolytes
Water
Electric potential
electrolytes
dissociation
metals
water
Activity coefficients
cells
solutes
Electrodes
electrodes
coefficients

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

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title = "Thermodynamic determination of solvation potentials of various metal chlorides by (1,4-dioxane + water) mixtures through EMF measurements",
abstract = "The EMF data of different metal chlorides (2:1 electrolytes) were obtained by using a cell [M X Hg|MCl 2 (m)|AgCl-Ag] at two temperatures. Stock solutions of metal chlorides (CoCl 2 , CuCl 2 and ZnCl 2 ) were prepared by weight in 1,4-dioxane-aqueous mixtures. There was a significant change in the EMF values with change of metal chloride, its concentration and solvents composition. The standard electrode potential (E°) values of the above cell were calculated from the measured EMF of these mixtures. The standard thermodynamic functions (ΔG°, ΔH° and ΔS°) and respective transfer parameters of MCl 2 from water to 20, 45 and 70{\%} dioxane-water mixtures were also evaluated. Equilibrium dissociation constants (K 1 and K 2 ) as well as the degrees of dissociation (α 1 and α 2 ) were obtained by iterative procedures. The data were analyzed in terms of solute-solvent interactions depending on standard and transfer thermodynamic parameters and mean activity coefficients (γ ± ) of electrolytes.",
author = "Manjula Spah and Spah, {Dal Chand} and Sooyoung Jun and Seungmoon Lee and Song, {Ho Jun} and Won-Gun Koh and Park, {Jin Won}",
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Thermodynamic determination of solvation potentials of various metal chlorides by (1,4-dioxane + water) mixtures through EMF measurements. / Spah, Manjula; Spah, Dal Chand; Jun, Sooyoung; Lee, Seungmoon; Song, Ho Jun; Koh, Won-Gun; Park, Jin Won.

In: Fluid Phase Equilibria, Vol. 279, No. 1, 15.05.2009, p. 17-27.

Research output: Contribution to journalArticle

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AU - Song, Ho Jun

AU - Koh, Won-Gun

AU - Park, Jin Won

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N2 - The EMF data of different metal chlorides (2:1 electrolytes) were obtained by using a cell [M X Hg|MCl 2 (m)|AgCl-Ag] at two temperatures. Stock solutions of metal chlorides (CoCl 2 , CuCl 2 and ZnCl 2 ) were prepared by weight in 1,4-dioxane-aqueous mixtures. There was a significant change in the EMF values with change of metal chloride, its concentration and solvents composition. The standard electrode potential (E°) values of the above cell were calculated from the measured EMF of these mixtures. The standard thermodynamic functions (ΔG°, ΔH° and ΔS°) and respective transfer parameters of MCl 2 from water to 20, 45 and 70% dioxane-water mixtures were also evaluated. Equilibrium dissociation constants (K 1 and K 2 ) as well as the degrees of dissociation (α 1 and α 2 ) were obtained by iterative procedures. The data were analyzed in terms of solute-solvent interactions depending on standard and transfer thermodynamic parameters and mean activity coefficients (γ ± ) of electrolytes.

AB - The EMF data of different metal chlorides (2:1 electrolytes) were obtained by using a cell [M X Hg|MCl 2 (m)|AgCl-Ag] at two temperatures. Stock solutions of metal chlorides (CoCl 2 , CuCl 2 and ZnCl 2 ) were prepared by weight in 1,4-dioxane-aqueous mixtures. There was a significant change in the EMF values with change of metal chloride, its concentration and solvents composition. The standard electrode potential (E°) values of the above cell were calculated from the measured EMF of these mixtures. The standard thermodynamic functions (ΔG°, ΔH° and ΔS°) and respective transfer parameters of MCl 2 from water to 20, 45 and 70% dioxane-water mixtures were also evaluated. Equilibrium dissociation constants (K 1 and K 2 ) as well as the degrees of dissociation (α 1 and α 2 ) were obtained by iterative procedures. The data were analyzed in terms of solute-solvent interactions depending on standard and transfer thermodynamic parameters and mean activity coefficients (γ ± ) of electrolytes.

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