Isobaric Vapor-Liquid Equilibrium of Methanol- Ethanol-Water-Salt Systems

Abstract

Abstract: The vapor-liquid equilibrium data of methanol-ethanol-water-NaCl, NaBr, Nal, LiCl and CaCl₂ were measured with the CP Iebulliometer at 93.33 kPa.We find a linear relationship between the boiling temperature and the mole fraction of the salt added when the relative composition of the ternary solvent is fixed.Also, a linear equation for the equilibrium was derived by using the thermodynamical theory and the origination of the linear relationship was discussed with Gibbs phase rule.

Key words: Mixed solvent, Salt effect, Colligative property, Linear relationship

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LIU Wen-bin, WANG Jian-ji, BAI Tong-chun, WANG Cai-lan, LU Jin-suo . Isobaric Vapor-Liquid Equilibrium of Methanol- Ethanol-Water-Salt Systems[J]. Chem. J. Chinese Universities, 1992, 13(4): 521.

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Isobaric Vapor-Liquid Equilibrium of Methanol- Ethanol-Water-Salt Systems

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