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Osmotic and activity coefficient of 1-ethyl-3-methylimidazolium bromide in aqueous solutions of potassium dihydrogen phosphate, dipotassium hydrogen phosphate, and tripotassium phosphate at T = 298.15 K
Physical Chemistry Department, Faculty of Chemistry (Excellence of Science for New Materials and Clean Chemistry) University of Tabriz.
Physical Chemistry Department, University of Tabriz.ORCID iD: 0000-0002-6516-1230
2010 (English)In: Journal of Chemical and Engineering Data, ISSN 0021-9568, E-ISSN 1520-5134, Vol. 55, no 11, p. 5182-5190Article in journal (Refereed) Published
Abstract [en]

Vapor−liquid equilibrium data (water activity, vapor pressure, osmotic coefficient, and activity coefficient) of the mixed electrolyte aqueous solution, 1-ethyl-3-methylimidazolium bromide, [Emim][Br], + tripotassium phosphate, [Emim][Br], + dipotassium hydrogen phosphate, [Emim][Br], + potassium dihydrogen phosphate, and their corresponding binary aqueous solutions have been measured by the isopiestic method at temperature 298.15 K. The osmotic coefficients for binary aqueous solutions were correlated to the Pitzer and modified Pitzer models. From these data, the corresponding mean molal activity coefficients, γ±, have been calculated. The activity coefficients of mixed electrolytes were calculated by Scatchard’s neutral-electrolyte method. The activity results were also satisfactorily fitted to the semiempirical equation.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2010. Vol. 55, no 11, p. 5182-5190
National Category
Engineering and Technology Bio Materials
Research subject
Wood and Bionanocomposites
Identifiers
URN: urn:nbn:se:ltu:diva-61900DOI: 10.1021/je100720xScopus ID: 2-s2.0-78449271136OAI: oai:DiVA.org:ltu-61900DiVA, id: diva2:1073171
Available from: 2017-02-09 Created: 2017-02-09 Last updated: 2018-03-06Bibliographically approved

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Sarmad, Shokat

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