the density (d), speed of sound (u) and electrolytic conductivity (λ) for systems containing acetaminophen, ionic liquid {1-octyl-3-methyl imidazolium bromide, [omim] br} and water have been measured at t = 293.15-308.15 k. the measured data have been applied to calculate, standard partial molar volume ( ), hepler’s constant , apparent molar isentropic compressibility (kφ), transfer volume ( ),...

Activity coefficients for each of the components, urea and sodium sulfate, in their ternary mixtures with water have been obtained using the isopiestic vapor pressure method over the concentration ranges 0 to 19.4 molal urea and 0 to 2.4 molal Na2S04. At the lower molalities of the solutes, there is mutual salting-in of the components which changes to salting-out at 0.4 molal Na2SQ4 and 5 molal...

Ultrasonic & Viscometric studies of glycine and other amino acids have been carried out in methanol + water and propanol-1 + water co-solvents at different temperatures 30, 35 and 40°C respectively. Various thermodynamic parameters such as apparent molal compressibility and their limiting values have been determined. The results are discussed in the terms of solute – solvent interactions in alc...