| Abstract
| - Activity coefficients at infinite dilutionof 17 polar solutes included linear and branched C1 to C5 alcohols,chlorinated methane, acetone, acetonitrile, ethyl acetate, 1,4-dioxane, and cyclohexanone in the ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate were determined by gas chromatography using the ionic liquid as thestationary phase. The measurements were carried out at temperatures between (303.15 and 343.15) K. From thetemperature dependence of the limiting activity coefficients, partial molar excess enthalpies at infinite dilutionof the organic solutes in the ionic liquid have been derived.
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