Study of solute–solute and solute–solvent interactions of l-serine in d-xylose/l-arabinose + water solutions using volumetric, ultrasonic and viscometric methods at different temperatures

Abstract

Densities (ρ) of solutions of l-serine in water and aqueous–d-xylose/l-arabinose (2.5% and 5% of d-xylose/l-arabinose, w/w in water) solutions at 293.15, 298.15, 303.15, 308.15, 313.15 and 318.15 K and ultrasonic speeds (u) and viscosities (η) of these solutions at 298.15, 303.15, 308.15, 313.15 and 318.15 K were measured. From these experimental data, apparent molar volume (), limiting apparent molar volume (), slope (Sv), apparent molar compressibility (), limiting apparent molar compressibility (), slope (), transfer volume (), transfer compressibility (), partial molar expansibility (), hydration number (), Falkenhagen coefficient (A), Jones–Dole coefficient (B), free energy of activation of viscous flow per mole of solvent () and per mole of solute () were calculated. The results are interpreted in terms of solute–solute and solute–solvent interactions in these systems.