Densities ,Ultrasonic velocities and Viscosities have been measured in binary liquid mixture containing ethylene glycol and Ethanol over the entire molefraction range at temperatures T=(298.15,303.15,308.15,313.15 and 318.15)K. From experimentally measured data of ultrasonic velocity, density and viscosity, thermo-acoustical parameters such as adiabatic compressibility(?), intermolecular freelength(Lf) and acoustical impedance(Z) have been calculated. These results have been explained in terms of molecular interactions.

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