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 C *p,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.
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Jasra, R.V., Ahluwalia, J.C. Enthalpies of solution, partial molal heat capacities and apparent molal volumes of sugars and polyols in water. J Solution Chem 11, 325–338 (1982). https://doi.org/10.1007/BF00649291
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DOI: https://doi.org/10.1007/BF00649291