Abstract
Ultrasonic velocities and densities of the binary liquid mixtures of N-ethyl aniline with different toluenes like toluene, o-nitrotoluene and m-nitrotoluene have been measured at temperatures 303.15 and 308.15 K over the entire composition range. Various theories of ultrasonic velocity were applied to experimental values in evaluating the velocities using Nomoto's relation (UNR), Impedence relation (UIR), Ideal mixing relation (UIMR), Jungie's relation (UJR)and Rao's specific velocity relation (UR). The molecular interaction parameter (χ) has been evaluated from the values of experimental and theoretical velocities. The variation of this interaction parameter with the composition mixture has been discussed in terms of molecular interactions.
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