Ultrasonic Velocity in Aniline Mixtures

The free length theory of Jacobson and the collision factor theory of Schaaffs for sound velocity in liquids have been used to calculate sound velocities at different concentrations in the binary mixtures of aniline with benzene, toluene, chloroform, carbontetrachloride, acetone, dioxane, ether and chlorobenzene. The experimental data was taken from the literature. It is found that the free length theory applies well only in case of polar-nonpolar mixtures whereas the collision factor theory applies equally well to polar- nonpolar- and polar-polar-mixtures.