Thermodynamics of amine + ketone mixtures 3. Volumetric, speed of sound data and viscosity at (303.15 and 308.15 K) for the binary mixtures of N,N-dimethylaniline + propiophenone, + p-methylacetophenone, + p-chloroacetophenone

Abstract

Densities ρ, viscosities η and ultrasonic sound speed u of pure propiophenone (PP), p-methylacetophenone (p-MeAP), p-chloroacetophenone (p-ClAP) and those of their binary mixtures prepared using N,N-dimethylaniline (N,N-DMA) as a common component, were measured at 303.15K and 308.15K over the entire composition range. These experimental data have been used to calculate excess volume VE, excess ultrasonic velocity uE, isentropic compressibility κs, intermolecular free length Lf, acoustic impedance Z, excess isentropic compressibility κsE, deviation in viscosity ∆η and excess Gibbs free energy of activation of viscous flow (G⁎E) were evaluated. The viscosity data have been correlated using three equations; Grunberg and Nissan, Katti and Chaudhri and Hind et al. The excess/deviations have been fitted by a Redlich–Kister equation and the results are discussed in terms of molecular interactions present in these mixtures.