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; Koh Won-Gun; Jin Won Park

doi:10.1016/j.fluid.2009.01.013

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, Koh Won-Gun, Jin Won Park

Department of Chemical and Biomolecular Engineering

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

4 Citations (Scopus)

Abstract

The EMF data of different metal chlorides (2:1 electrolytes) were obtained by using a cell [M_X Hg|MCl₂ (m)|AgCl-Ag] at two temperatures. Stock solutions of metal chlorides (CoCl₂, CuCl₂ and ZnCl₂) 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 MCl₂ from water to 20, 45 and 70% dioxane-water mixtures were also evaluated. Equilibrium dissociation constants (K₁ and K₂) as well as the degrees of dissociation (α₁ and α₂) 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 language	English
Pages (from-to)	17-27
Number of pages	11
Journal	Fluid Phase Equilibria
Volume	279
Issue number	1
DOIs	https://doi.org/10.1016/j.fluid.2009.01.013
Publication status	Published - 2009 May 15

Bibliographical note

Funding Information:
D.C. Spah thanks the Korean Federation of Science and Technology (KOFST) and Yonsei University, Seoul for inviting him as a Visiting Scientist under the Brain Pool Program.

All Science Journal Classification (ASJC) codes

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

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10.1016/j.fluid.2009.01.013

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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 [MX Hg|MCl2 (m)|AgCl-Ag] at two temperatures. Stock solutions of metal chlorides (CoCl2, CuCl2 and ZnCl2) 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 MCl2 from water to 20, 45 and 70% dioxane-water mixtures were also evaluated. Equilibrium dissociation constants (K1 and K2) as well as the degrees of dissociation (α1 and α2) 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 Koh Won-Gun and Park, {Jin Won}",

note = "Funding Information: D.C. Spah thanks the Korean Federation of Science and Technology (KOFST) and Yonsei University, Seoul for inviting him as a Visiting Scientist under the Brain Pool Program. ",

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AU - Spah, Manjula

AU - Spah, Dal Chand

AU - Jun, Sooyoung

AU - Lee, Seungmoon

AU - Song, Ho Jun

AU - Won-Gun, Koh

AU - Park, Jin Won

N1 - Funding Information: D.C. Spah thanks the Korean Federation of Science and Technology (KOFST) and Yonsei University, Seoul for inviting him as a Visiting Scientist under the Brain Pool Program.

PY - 2009/5/15

Y1 - 2009/5/15

N2 - The EMF data of different metal chlorides (2:1 electrolytes) were obtained by using a cell [MX Hg|MCl2 (m)|AgCl-Ag] at two temperatures. Stock solutions of metal chlorides (CoCl2, CuCl2 and ZnCl2) 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 MCl2 from water to 20, 45 and 70% dioxane-water mixtures were also evaluated. Equilibrium dissociation constants (K1 and K2) as well as the degrees of dissociation (α1 and α2) 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 [MX Hg|MCl2 (m)|AgCl-Ag] at two temperatures. Stock solutions of metal chlorides (CoCl2, CuCl2 and ZnCl2) 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 MCl2 from water to 20, 45 and 70% dioxane-water mixtures were also evaluated. Equilibrium dissociation constants (K1 and K2) as well as the degrees of dissociation (α1 and α2) 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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Thermodynamic determination of solvation potentials of various metal chlorides by (1,4-dioxane + water) mixtures through EMF measurements

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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