Title of article :
Densities, speeds of sound, isentropic compressibilities, refractive indexes, and viscosities of tetrahydrofuran with haloalkane or alkyl ethanoate at T = 303.15 K
Author/Authors :
S.L Oswal، نويسنده , , R.L Gardas، نويسنده , , R.P. Phalak، نويسنده ,
Abstract :
Isentropic compressibilities κS, excess isentropic compressibilities image, excess molar volumes VE, viscosity deviations Δη, and excess Gibbs energy of activation of viscous flow ΔG*E for nine binary mixtures of C4H8O with CCl4, CHCl3, CHCl2CHCl2, 1-C6H13Cl, 1-C6H13Br, CH3CO2CH3, CH3CO2C2H5, CH3CO2C4H9, and CH3CO2C5H11 at 303.15 K have been derived from experimental densities ρ, speeds of sound u, refractive indexes nD and viscosities η. The limiting values of excess partial molar volumes of C4H8O at infinite dilution image in different solvents have been estimated. The results obtained for dynamic viscosity of binary mixtures were used to test the semi-empirical relations of Grunberg–Nissan, Tamura–Kurata, Hind–McLaughlin–Ubbelohde, Katti–Chaudhri, McAllister, Heric, and Auslaender. Finally, the experimental refractive indexes were compared with the predicted results for Lorentz–Lorenz, Dale–Gladstone, Eykman, Arago–Boit, Newton, Oster, Heller, and Wiener equations.
Keywords :
Isentropic compressibility , Refractive index , Excess molar volume , Speed of sound , Tetrahydrofuran , Viscosity