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KMID : 1059520160600020111
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Journal of the Korean Chemical Society
2016 Volume.60 No. 2 p.111 ~ p.117
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Partial Miscibilities in Binary Solutions with Two Kinds of Specific Interactions
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Jung Hae-Young
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Abstract
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In this article, new Gibbs free energy of mixing is derived when there are specific interactions between solvent- solute molecules and between solute-solute molecules in binary solutions. It is asssumed that a probability of specific interactions satisfies a binomial distribution. Using this Gibbs free energy of mixing, we investigate possible types of partial miscibilities and show that Ω-shaped temperature-composition phase diagrams can exist. We calculate Ω-shaped temperaturecomposition phase diagram of water-2-butanol system and compare that with result calculated by the method of Hino5 et al. and the experimental data.
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KEYWORD
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Partial miscibility, Closed miscibility loop, Ω-shaped miscibility, Specific interaction, Water-2-butanol
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