Ultrasonic Investigation of Ni(NO3)2.6H2O in Glycol + Water Solvent at 303.15 K

Abstract

Various acoustic parameters such as isentropic compressibility (\(\beta\)s), intermolecular free length (Lf), apparent molar volume (\(\Phi\)v), apparent molar compressibility (\(\Phi\)k), molar compressibility (W), molar sound velocity (R), acoustic impedance (Z) of Ni(NO3).6H2O in 10%, 20% and 30% Glycol + Water at 303.15K have been determined from ultrasonic velocity (U), density (\(\rho\)) and relative viscosity (\(\eta\)r) of the solution. These parameters are related with the molar concentration of the solution and reflect the distortion of the structure of the solvent i.e. Glycol + Water. As most of the solvent molecules are engaged in interaction with the solute, addition of more solute molecules to the solvent leads to the acceleration of the process of breaking of aggregates of solvent molecules. This process leads to the inhibition of propagation of sound waves due to large sized solute molecules acting as structure promoters.