Abstract
Density r, Viscosity η, and ultrasonic velocity u, have been measured in pure Quinoline, o-cresol, m-cresol, p-cresol and methanol and in their ternary liquid mixtures with quinoline and methanol as common components at 303.15, 308.15, 313.15 and 318.15K over the entire range of composition. From these experimental data, various thermo-acoustic parameters such as excess molar volume VmE, excess ultrasonic velocity uE, viscosity deviation Δη and excess Gibb’s free energy of activation for viscous flow ΔG*E have been calculated. The deviation/excess parameters were plotted against the mole fraction of quinoline over the whole composition range. The observed negative and positive values of deviaiton/excess thermo-acoustic parameters were explained on the basis of intermolecular interactions present in these mixtures.
Highlights
As a part of ongoing research work on acoustic, thermodynamic and transport properties of binary and ternary liquid mixtures, we report here the results of ternary mixtures of quinoline with o-cresol, m-cresol, p-cresol in methanol at 303.15, 308.15, 313.15, 318.15 K covering the whole composition range
Knowledge of various thermodynamic properties of mixtures involving quinoline with self associated alcohols and phenols helps in designing an efficient industrial process and helps in understanding the inter and intra molecular interactions
The variations of VmE, uE, Δη and G*E with the mole fraction of quinoline for o-cresol, m-cresol, p-cresol in methanol at 303.15, 308.15, 313.15, 318.15 K are plotted in Figure 1(a-c), Figure 2(1-c), Figure 3(a-c) and Fig 4(a-c)
Summary
As a part of ongoing research work on acoustic, thermodynamic and transport properties of binary and ternary liquid mixtures, we report here the results of ternary mixtures of quinoline with o-cresol, m-cresol, p-cresol in methanol at 303.15, 308.15, 313.15, 318.15 K covering the whole composition range. The study of ternary mixtures of quinoline with phenols in methanol would of considerable interest because these mixtures exhibit varying molecular interactions and are important from an industrial point of view. We report the density ( ), viscosity (η) and ultrasonic velocity (u) of the ternary mixtures of quinoline with ocresol, or m-cresol, or p-cresol in methanol at varying temperatures of 303.15, 308.15, 313.15 and 318.15 K over the entire range of composition.
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