SOLUTE-SOLVENT INTERACTIONS OF GLYCINE, α-ALANINE, β-ALANINE AND PHENYL ALANINE IN AQUEOUS SUCROSE SOLUTIONS AT 298.15 K: AN ULTRASONIC STUDY

Abstract

Ultrasonic velocity of the solutions of glycine, α-alanine, β-alanine and phenyl alanine in aqueous sucrose solutions have been measured at 298.15 K. From the experimental data the derived acoustic parameters like isentropic compressibility (Ks), acoustic impedance (Z), molar compressibility(W), molar sound velocity(R), relative association(RA), intermolecular free length(Lf), free volume (Vf), internal pressure(πi), ultrasonic attenuation (α/f2) and van der Waals constant (b) have been obtained. The non-linearity parameters (B/A), isothermal compressibility (βT), co-efficient of thermal expansion (α) and heat capacity ratio (γ) have also been calculated. These parameters have been used to discuss the molecular interactions in the solutions.