Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

ABSTRACT

Densities of L-alanine, and L-valine have been measured at T = (288.15 and 308.15) K in aqueous sucrose solutions ranging from pure water to 25 mass % of sucrose. From these densities, apparent molar volumes (V/) and limiting partial molar volumes oV ?/P of each amino acid in various aqueous sucrose solutions have been evaluated. These data were combined with the earlier reported V ?/ values of L-alanine, and L-valine in aqueous sucrose solutions at T = 298.15 K to calculate the ooV ?/=oT PP values. The partial molar properties of transfer oDV ?/P from water to aqueous sucrose solutions at infinite dilution has been calculated. Transfer parameters have been interpreted in terms of solute cosolute interactions on the basis of a cosphere overlap model. Pair and triplet interaction coefficients have also been calculated from transfer volume data.