Ultrasonic Studies on Molecular Interactions in Binary Mixtures of -Methyl Aniline with Methyl Isobutylketone, +3-Pentanone, and +Cycloalkanones at 303.15 K.

Densities, , viscosities, , and ultrasonic sound velocities of pure methyl isobutylketone, diethylketone, cyclopentanone, cyclohexanone, 2-methyl cyclohexanone and those of their binary mixtures with -methyl aniline were measured at 303.15 K over the entire composition range. These experimental data have been used to calculate the excess volume (), deviation in ultrasonic sound velocity (∆), isentropic compressibility ( ), intermolecular free length (), excess intermolecular free length ([Formula: see text]), acoustic impedance (), excess isentropic compressibility ([Formula: see text]), deviation in viscosity (∆) and excess Gibbs energy of activation of viscous flow (). The viscosity data have been correlated using three equations proposed by Grunberg and Nissan, Katti and Chaudhri, and Hind et al. The excessdeviations have been fitted by Redlich-Kister equation and the results are discussed in terms of molecular interactions present in these mixtures.