Abstract
Activity coefficients at infinite dilution, γ13∞, for both polar and non-polar solutes in the polar solvent quinoline, or 1,3-dimethyl-2-imidazolidinone have been determined by gas–liquid chromatography at T= (278.15, 313.15, and 323.15) K. This work is a continuation of our programme of measurements of γ13∞. The results have been used to predict the solvent potential for separation of liquids by extractive distillation.Gas–liquid chromatography is a well-established and accurate method for obtaining γ13∞. The mixed second virial coefficients, B12, used in this work were determined by the principle of corresponding states and the McGlashan–Potter equation. The Hudson and McCoubrey combining rules and the Lorentz rule were used for the calculations ofT12c and V12c, respectively.
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