Activity coefficients at infinite dilution,, have been determined for 17 organic solutes, alkanes, alkenes, and alkyl benzenes, in the ionic liquid 1-propyl-2,3-dimethylimidazolium tetrafluoroborate ([PDMIM][BF 4 ]) by the gas−liquid chromatographic method with the ionic liquid as the stationary phase. The measurements were carried out in the temperature range of 303.15 K to 363.15 K. The partial molar excess enthalpies at infinite dilution,, were also determined for the solutes from the temperature dependence of the values.
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Wang et al. (2007) studied this question.
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