Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5410019 | Journal of Molecular Liquids | 2016 | 12 Pages |
Abstract
The densities, Ï ultrasonic speeds, u and refractive index nD of the binary mixtures of ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate [BMIM][PF6] with 2-propoxyethanol, including those of pure liquids, have been measured over the entire range of composition at 298.15, 303.15, 308.15, 313.15, 318.15 and 323.15 K and atmospheric pressure. The IR spectra of these mixtures have also been recorded at 298.15 K. From the experimental data, excess molar volumes, VmE, excess isentropic compressibility, κsE, deviations in ultrasonic speed, Îu, excess molar isentropic compressibility, Ks , mE, and deviations in refractive indices, ÎÏnD were calculated and fitted using the Redlich-Kister equation. The partial molar volumes, VÌ
m,1 and VÌ
m,2, partial molar isentropic compressibilities, KÌ
s,m,1 and KÌ
s,m,2, excess partial molar volumes, VÌ
m,1E and VÌ
m,2E and excess partial molar isentropic compressibilities, KÌ
s,m,1E and KÌ
s,m,2E over whole composition range; partial molar volumes, VÌ
m,1° and VÌ
m,2°, partial molar isentropic compressibilities, KÌ
s,m,1° and KÌ
s,m,2°, excess partial molar volumes, VÌ
m,1°E and VÌ
m,2°E and excess partial molar isentropic compressibilities, KÌ
s,m,1°E and KÌ
s,m,2°E of the components at infinite dilution have also been calculated. The variations of these parameters with composition and temperature have been discussed in terms of intermolecular interactions prevailing in these mixtures.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
T. Srinivasa Krishna, K.T.S.S. Raju, M. Gowrisankar, Anil K. Nain, B. Munibhadrayya,