Abstract

The enthalpies of dissolution of [C4mim]OTf, [C4mim]NTf2, and [C4mpy]NTf2 ionic liquids in isopropanol and isopropanol-water mixtures of three compositions are measured with an isothermal calorimeter at 298.15 K. The enthalpies of dilution of [C4mim]OTf solutions in an isopropanol-water mixture containing 50.0 mol % of alcohol are also determined. Enthalpies and constants of ion association are estimated and the standard enthalpies of dissolution are found for [C4mim]OTf, [C4mim]NTf2, and [C4mpy]NTf2 in isopropanol and its mixtures with water.

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