Studies on molecular interactions in binary liquid mixtures by viscosity and ultrasonic velocity measurements at 303.15 K

Abstract The densities, viscosities, and ultrasonic velocities of pure ethanol, 1-hexanol, 1-octanol, acetonitrile, N,N-dimethylformamide, and of the binary mixtures of ethanol with 1-hexanol and 1-octanol, and those of acetonitrile with N,N-dimethylformamide were determined at 303.15 K. The excess adiabatic compressibility, excess intermolecular free length, excess volume, excess viscosity, excess acoustic impedance, and the molecular association have been calculated from the experimental data. These parameters are used to discuss the nature and the extent of intermolecular interactions in the mixtures.