Ultrasonic studies on molecular interactions of ZnSO4 in aqueous solutions of glucose at various concentrations

Neha Sawhney, Mukesh Kumar, Am

Abstract

The values of density (ρ), ultrasonic velocity (U) and viscosity (η) for various concentrations of ZnSO4 has been measured in various aqueous solutions of glucose at 7MHz and at 303.15 K in order to study the ion–solvent interactions. By using standard relations from measured values of density, ultrasonic velocity (U) and viscosity (η), the desired acoustical and thermodynamic parameters such as adiabatic compressibility (βad), intermolecular free length (Lf), acoustic impedance (Z), relaxation time (τ), rao’s constant (RM), wada’s constant (W), free volume (Vf), gibb’s free energy (ΔG) and available volume (Va) have been calculated. The changes in these parameters with change in concentration have been explained on the basis of solute-solvent interactions and structure modifying tendency of solute in solvent. It is observed that ion–solvent interactions increase with increase in concentration of Zn++ ions in aqueous solutions of glucose.