Thermodynamic Properties of Binary Liquid Mixtures of Furfural with Toluene and Nitro Benzene at Varying Temperatures.

Binary liquid mixtures of furfural with toluene and nitrobenzene were examined for ultrasonic velocity, viscosity and density at a temperature of 308.15 and 318.15 K in various mole fractions. The calculated thermodynamic properties from density, viscosity, ultrasonic velocity and some excess parameters like Excess Volume(V^E), Deviation in Isentropic Compressibility(ΔK_S), Deviation in Viscosity(Δη), Deviation in Intermolecular Free Length(ΔL_F), Deviation in Intermolecular Free Volume(ΔV_F) and Deviation in Acoustic Impedance(ΔZ) were determined and found the proper coefficients for a polynomial equation of the Redlich-Kister type, from which the theoretical values were calculated. The interaction ability of the binary liquid mixtures was investigated, as well as the deviations of the binary liquid mixtures from their ideal behavior were studied based on the experiment and theoretical values. [ABSTRACT FROM AUTHOR]