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In the present study, densities, ρ, and velocities of sound, u, have been measured for mono-, di-, and trisaccharides at molalities ranging from (0.0 50 to 0.100) mol•kg −1 in aqueous solutions of leucine (0.025, 0.050, and 0.100) mol•kg −1 over a wide temperature range (293.15 to 313.15) K. By using density and velocities of sound data the partial molar volumes, ϕ v o , isentropic compressibilities, κ s , and partial molar isentropic compression, ϕ k o , for different saccharides have been evaluated. The trends of variation of different parameters have been interpreted in light of the solute−solvent/cosolute and solute−solute interactions occurring in these systems. An attempt has also been made to compare the results with the corresponding results in aqueous electrolyte solutions.

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