Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Volumetric and viscometric studies of urea in binary aqueous solutions of glucose at different temperatures

Samanta, T., Ray, A.
J. Chem. Thermodyn. 2010, 42, 2, 262-266
ABSTRACT
Densities and viscosities of urea in (1.0, 2.5, and 5.0) mass% of aqueous glucose solutions have been measured at T = (298.15, 303.15, 308.15, and 313.15) K, respectively. Apparent molar volumes, limiting partial molar volume, and relative viscosity have been obtained from the density and viscosity data. Limiting partial molar expansibilities have also been calculated from the temperature dependence of limiting partial molar volumes. The viscosity data has been analyzed using the Jones Dole equation. The results are used to establish the nature of solute solute and solute solvent interactions. The activation parameters of viscous flow have also been calculated on the basis of transition state treatment of the relative viscosity. Result shows that the solute acts as water structure breaker and posses weak solute solvent interaction.
Compounds
# Formula Name
1 CH4N2O urea
2 C6H12O6 D-glucose
3 H2O water
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 2
  • 1
  • 3
  • Viscosity, Pa*s ; Liquid
  • Temperature, K; Liquid
  • Molality, mol/kg - 1; Liquid
  • Solvent: Mass fraction - 2; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Capillary tube (Ostwald; Ubbelohde) method
  • 84
  • POMD
  • 2
  • 1
  • 3
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Molality, mol/kg - 1; Liquid
  • Solvent: Mass fraction - 2; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Pycnometric method
  • 84