ULTRASOUND STUDY OF BINARY-MIXTURES OF ACETONE WITH ETHYLENE-GLYCOL, BENZENE, AND TOLUENE

Ultrasonic velocity, density, Isentropic compressibility, and molecular association have been determined for binary liquid mixtures of acetone with ethylene glycol (I), benzene (II), and toluene (III) at different compositions. The temperatures of study were 23 °C In the former and 27 °C in the latter two. Excess density values are positive in each case. Excess compressibility Is negative, except in the case of acetone and ethylene glycol in which it is negative in a mixture rich in ethylene glycol but becomes positive at compositions quite rich in acetone. Excess properties have been used to discuss the molecular interaction taking place between the components of mixtures. The associating nature of ethylene glycol leads to a stronger interaction in I while π electrons of aromatic rings are possibly involved In the interaction in II and III. © 1979, American Chemical Society. All rights reserved.