Thermodynamic Properties of Ethanol + Pyridine, Ethanol + Benzene, and Pyridine + Benzene Mixtures at Temperature 298.15 K and Under Atmospheric Pressure

Experimental densities, viscosities, refractive indices, and sound speeds at temperature 298.15 K atmospheric pressure are reported for the binary liquid mixtures of ethanol + benzene, pyridine, benzene pyridine. From these experimental data, various thermodynamic excess deviation properties were calculated fitted by Redlich-Kister polynomial to determine adjustable coefficients standard deviations. The number significantly representing each property was optimized applying F-test. variation with composition has been interpreted in terms molecular interactions between components mixture structural effects. Furthermore, several theoretical semi-empirical models used predict indices investigated mixtures. predicting ability model ascertained mean absolute percentage data.