Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Apparent molar volumes and apparent molar heat capacities of aqueous D-lactose.H2O at temperatures from (278.15 to 393.15) K and at the pressure 0.35 MPa

Sargent, J. D., Niederhauser, T. L., Woolley, E. M.[Earl M.]
J. Chem. Thermodyn. 2004, 36, 7, 603-608
ABSTRACT
Apparent molar volumes and apparent molar heat capacities were determined for aqueous solutions of D-lactose H2O at molalities (0.01 to 0.34) mol kg-1 at temperatures (278.15 to 393.15) K, and at the pressure 0.35 MPa. Our V/ values were calculated from densities obtained using a vibrating tube densimeter, and our Cp;/ values were obtained using a twin fixed-cell, power-compensation, differential-output, temperature-scanning calorimeter. Our results for D-lactose(aq) and for D-lactcose H2O were fitted to functions of m and T and compared with the literature results for aqueous D-glucose and D-galactose solutions. Infinite dilution partial molar volumes and heat capacities are given over the range of temperatures.
Compounds
# Formula Name
1 C12H24O12 .alpha.-D-lactose hydrate
2 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
  • 1
  • 2
  • Apparent molar heat capacity, J/K/mol ; Liquid
  • Molality, mol/kg - 1; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Differential flow calorimetry
  • 168
  • POMD
  • 1
  • 2
  • Apparent molar volume, m3/mol ; Liquid
  • Molality, mol/kg - 1; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Calculated with densities of this investigation
  • 77