The present communication reports the experimental values of the density, ultrasonic velocity and viscosity of the various compositions of liquid mixtures of aqueous solutions of Lithium sulphate (Li2SO4) and Lithium hydroxide (LiOH) at 303,308,313 and 318K. From these experimental measurements the thermo-acoustical parameters such as acoustic impedance (Z) and adiabatic compressibility (bad) has been calculated. The variations in these parameters have been correlated to derive the intermolecular interactions taking place between the mixtures of present study.