Abstract
Densities and viscosities of aqueous solutions and 1.0 mol·kg–1 aqueous urea solutions of glucose, fructose, sucrose, and lactose have been measured at two different temperatures [(308.15 and 318.15) K] in the concentration range (0 to 3) mol·kg–1. The different derived parameters such as the apparent molal volume of solute (ϕV) and Jones–Dole equation viscosity B- and D-coefficients have been obtained for these binary and ternary mixtures. Partial molal volumes (V20) at infinite dilution were obtained by smooth extrapolation of the ϕV–m curves to zero concentration. These data were used to obtain the corresponding volume of transfer (ΔtransV20) for saccharides from pure water to 1.0 mol·kg–1 aqueous urea solutions at two different temperatures. The results are interpreted in terms of various interactions among solute and solvent molecules.
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