摘要:Experimentally determined values of Ultrasonic velocities are compared with Nomoto's relation, Van Dael ideal mixing relation, impedance relation, Rao's specific velocity relation and Junjie's theory in the binary mixture of quinoline and p-xylene at 303.15, 308.15, 313.15 and 318.15 K over the entire composition range. A good agreement has been found between experimental and theoretical ultrasonic velocities. For non-ideality in the mixtures, U2exp/U2imx has also been evaluated. The relative applicability of these theories to the present systems has been checked and discussed. The results are explained in terms of molecular interactions occurring in the binary liquid mixture.