Densities and Excess Molar Volumes of Binary and Ternary Mixtures of Aqueous Solutions of 2,2,2-Trifluoroethanol with Acetone and Alcohols at the Temperature of 298.15 K and Pressure of 101 kPa

Abstract

Excess molar volumes VmE of the binary mixtures of (trifluoroethanol + 1-propanol), (trifluoroethanol + 2-propanol), (acetone + water), (methanol + water), (ethanol + water), (1-propanol + water), (2-propanol + water), and the ternary mixtures of (trifluoroethanol + methanol + water), (trifluoroethanol + ethanol + water), (trifluoroethanol~+ 1-propanol + water), (trifluoroethanol + 2-propanol + water) and (trifluoroethanol + acetone + water) were measured with a vibrating tube densimeter at the temperature of 298.15 K and the pressure 101 kPa. The extrema in VmE of trifluoroethanol mixtures occur at −0.690 cm3-mol−1 for (trifluoroethanol + 1-propanol), at −0.990~cm3-mol−1 for (trifluoroethanol + 2-propanol); at 0.562 and −0.973 cm3-mol−1 for (trifluoroethanol + methanol + water), at 0.629 and −0.973 cm3-mol−1 for (trifluoroethanol + ethanol + water), at 1.082 and −0.659 cm3-mol−1 for (trifluoroethanol~+ 1-propanol + water), at 0.998 and −0.991 cm3-mol−1 for (trifluoroethanol~+ 2-propanol + water), and at 0.515 and −1.472 cm3-mol−1 for (trifluoroethanol + acetone + water). The experimental ternary VmE values were predicted by empirical expressions using binary solution data.