Journal of Solution Chemistry

, Volume 11, Issue 5, pp 325–338

Enthalpies of solution, partial molal heat capacities and apparent molal volumes of sugars and polyols in water

  • R. V. Jasra
  • J. C. Ahluwalia
Article

DOI: 10.1007/BF00649291

Cite this article as:
Jasra, R.V. & Ahluwalia, J.C. J Solution Chem (1982) 11: 325. doi:10.1007/BF00649291

Abstract

Integral enthalpies of solution of some sugars and polyols in water at low concentrations have been determined calorimetrically at 25 and 35°C. These data have been used to derive heat capacities of solution ΔC°p at 30°C. Partial molal heat capacities C°p,2 have been obtained by combining ΔC°p with Cp,2*, the heat capacity of pure solid compounds. Apparent molal volumes have been obtained from density data. The sugars as well as polyols show significantly high positive ΔC°p and C°p,2 values. The results have been explained in terms of a specific hydration model. The effect of substitution of-OH by glycosidic-OCH3 and of-CHOH by deoxy-CH2 are also discussed.

Key words

Enthalpy of solutionpartial molal heat capacitydensityapparent molal volumesugarspolyolsspecific hydrationhydrophobic hydration

Copyright information

© Plenum Publishing Corporation 1982

Authors and Affiliations

  • R. V. Jasra
    • 1
  • J. C. Ahluwalia
    • 1
  1. 1.Department of ChemistryIndian Institute of TechnologyNew DelhiIndia