A study on thermodynamic properties of the liquid mixture is used in the industrial process, which often extends to solution chemistry. Density(ρ), Viscosity(η), and Ultrasonic velocity(U) were determined for binary liquid mixtures of furfural with chlorobenzene, nitromethane, diethyl malonate and 1- butanol at temperature of 308.15K and 318.15K at atmospheric pressure over the whole range of mole fractions. The calculated thermodynamic properties and some excess parameters such as Excess Volume(VE), Deviation in Isentropic Compressibility(∆KS), Deviation in Viscosity(∆η), Deviation in Intermolecular Free Length(∆LF), Deviation in Intermolecular Free Volume(∆VF), Deviation in Internal Pressure(∆π) and Deviation in Acoustic Impedance(∆Z) were calculated and applied to the Redlich-Kister type polynomial equation to determine the appropriate coefficients. The effects of composition and temperature on thermodynamic parameters have been studied in terms of molecule interaction in these liquid mixtures. Further, IR spectra of these liquid mixtures were recorded and the data were utilized to examine the mixing behavior of the components.
In present communication, measurements of experimental density, viscosity and ultrasonic velocity
of binary liquid mixtures of butyl carbitol with 1-butanol, toluene and diethylmalonate have been
carried out at 308.15 and 318.15 K at atmospheric pressure over the entire composition range of mole
fractions. To study the intermolecular interactions present in these liquid mixtures, thermodynamic
parameters like VE, ΔKS, Δη, ΔLf, ΔVf and ΔZ have been calculated. The excess functions and their
deviations from ideality have also been correlated using Redlich-Kister type polynomial equation by
the method of least-squares. The variations of thermodynamic parameters with composition and
temperature have been discussed in terms of molecular interaction in these liquid mixtures. Further,
IR spectra of these liquid mixtures have also been recorded and the obtained results have been used to
analyze the mixing behaviour of the components.
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(VE), Deviation in Isentropic Compressibility(∆KS), Deviation in Viscosity(∆η), Deviation in Intermolecular Free Length(∆LF), Deviation in Intermolecular Free Volume(∆VF) and Deviation in Acoustic Impedance(∆Z) 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.
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