Abstract
From the measurements of density, (ρ) and speed of sound, (u), the intermolecular interactions of D-maltose monohydrate and D-lactose monohydrate with trisodium citrate (TSC) have been explored in aqueous medium at temperatures, T = (293.15–313.15) K, pressure p = 0.1 MPa. From the experimental density measurements, apparent molar volume (VΦ), limiting apparent molar volume (VoΦ) and limiting apparent molar volume of transfer (VoΦ,tr) have been determined for various solutions of maltose and lactose in aqueous TSC. In addition, using experimental speed of sound data, apparent molar isentropic compressibility (KΦ,s), limiting apparent molar isentropic compressibility (KoΦ,s) and partial molar isentropic compression of transfer (KoΦ,s,tr) have been calculated.Further, apparent molar expansibility (EoΦ), Hepler's constant values(∂EoΦ∂T)Pand hydration number (nH)have been assessed to contribute the interpretations received from the acoustic and analysis. The assessed outcomes were construed in terms of diverse intermolecular interactions present in the ternary systems (saccharides+ water + TSC) through a co-sphere overlap model. From the Hepler's constant structure breaking nature of the solute have been confirmed.
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