Excess molar volumes, excess thermal expansion coefficients and isentropic compressibility deviations for binary mixtures of benzyl alcohol + (1-butanol, 2-butanol, 2-methyl-1-butanol and tert-butanol) at T = (298.15-328.15) K and ambient pressure

ABSTRACT

In the present paper, we report the density (ρ) and ultrasonic speed (u) of four binary mixtures of benzyl alcohol with 1-butanol, 2-butanol, 2-methyl-1-butanol and tert-butanol over the temperature range 298.15–328.15 K and ambient pressure, covering the entire composition range, expressed by the mole fraction (x₁) of benzyl alcohol. The experimental data on density and ultrasonic speed were used to calculate the excess molar volumes, , deviations in isentropic compressibility, , excess thermal expansion coefficients, , excess partial molar volumes, , and excess partial molar volumes at infinite dilution, . The results obtained were used to investigate the nature and strength of intermolecular interactions in these mixtures. The calculated quantities , and are well correlated with the Redlich–Kister equation.

KEYWORDS:

• Alcohol
• liquid mixture
• density
• excess molar property
• sound speed

Acknowledgements

The authors are grateful to the Research Committee of Shiraz University of Technology for supporting this project.

Disclosure statement

No potential conflict of interest was reported by the authors.

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