Journal of Chemical Thermodynamics, Vol.37, No.12, 1347-1350, 2005
Partial molar volume of paracetamol in water, 0.1 M HCl and 0.154 M NaCl at T = (298.15, 303.15, 308.15 and 310.65) K and at 101.325 kPa
The apparent molar volume of paracetamol (4-acetamidophenol) in water, 0.1 M HCl and 0.154 M NaCl as solvents at (298.15, 303.15, 308.15 and 310.65) K temperatures and at a pressure of 101.325 kPa were determined from the density data obtained with the help of a vibrating-tube Anton Paar DMA-48 densimeter. The partial molar volume, V-m, of paracetamol in these solvents at different temperatures was evaluated by extrapolating the apparent molar volume versus molality plots to m = 0. In addition, the partial molar expansivity, E degrees, the isobaric coefficient of thermal expansion, alpha(p), and the interaction coefficient, S-v, have also been computed. The expansivity data show dependence of E degrees values on the structure of the solute molecules. (c) 2005 Published by Elsevier Ltd.
Keywords:density;apparent molar volume;partial molar volume;paracetamol;interaction coefficient;partial molar expansivity;isobaric coefficient of thermal expansion