Volumetric and viscometric properties of urea and D-glucose in aqueous glycine at 308 K

Abstract

Density, viscosity and refractive index data for urea and D-glucose in (0.01, 0.02 and 0.03 M) glycine + water mixed solvent as a function of urea/glucose concentration are presented at 308 K. The density data have been used to obtain limiting apparent molar volume (Φ 0 v ) and the slope (S* v ) using Masson's equation. The viscosity data are analysed by means of Jones-Dole equation. The activation parameters of viscous flow, namely free energy of activation per mole of solvent, (Δμ 0 # 1 ) and free energy of activation per mole of solute, (Δμ 0 # 2 ), were obtained by the application of transition-state theory. The refractive index was used to calculate molar refractive index, (R D ) of the solutes in different solvent mixtures. All these parameters are used to study the solute-solvent and solute-solute interactions in the mixtures used in the present investigation.