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Vol. 31 No. 4 (2019): Vol 31 Issue 4

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Estimation of Excess Properties of Binary Liquids Systems of Tetrahydrofurfuryl Alcohol with Short-Chain Carboxylic Acids at 298.15 K

https://doi.org/10.14233/ajchem.2019.21746
Husam S. Khalaf
Department of Chemistry, College of Education for Pure Science/Ibn Al-Haitham, University of Baghdad, Baghdad, Iraq
https://orcid.org/0000-0003-3932-3483
Zainab A.H. Al-Dulaimy
Department of Chemistry, College of Education for Pure Science/Ibn Al-Haitham, University of Baghdad, Baghdad, Iraq
https://orcid.org/0000-0002-6948-9516
Ahmed M. Abbas
Department of Chemistry, College of Education for Pure Science/Ibn Al-Haitham, University of Baghdad, Baghdad, Iraq
https://orcid.org/0000-0002-2001-4704
Maida H. Saleem
Department of Chemistry, College of Education for Pure Science/Ibn Al-Haitham, University of Baghdad, Baghdad, Iraq
https://orcid.org/0000-0001-8506-2662

Corresponding Author(s) : Husam S. Khalaf

husamkhalaf250@gmail.com

Asian Journal of Chemistry, Vol. 31 No. 4 (2019): Vol 31 Issue 4

Abstract

At the temperature 298.15 K, some physical properties such as: refractive indices (nD), viscosities (η) and densities (ρ) were studied in four liquid-liquid mixtures: carboxylic acids (HCOOH, CH3COOH, CH3CH2COOH and CH3CH2CH2COOH) with tetrahydrofurfuryl alcohol (THFA) with the identified configuration set. These empirical data were utilized to estimate the excess molar volumes (VmE), refractive index perversions (ΔR), viscosity deviations (ηE) and excess molar Gibbs free energy (ΔG*E). Values of VmE, ηE, ΔG*E and ΔR were plotted versus mole fraction of tetrahydrofurfuryl alcohol. In all cases, the values of VmE, ηE, ΔG*E and ΔR that obtained in this study were found to be negative at 298.15 K. The excess parameters were applied in the Redlich-Kister equation by utilizing multi-parameter coefficients that concluded binary coefficients and in respect to the standard deviation. The difference of these characteristics with the formation of binary liquid systems indicates the absence of bipolar bond, variation in the shape and size of component molecules, hydrogen bonding and dipolar interaction among unlike molecules.

Keywords

Binary liquid systems Refractive index Excess properties Carboxylic acids Tetrahydrofurfuryl alcohol
Khalaf, H. S., Al-Dulaimy, Z. A., Abbas, A. M., & Saleem, M. H. (2019). Estimation of Excess Properties of Binary Liquids Systems of Tetrahydrofurfuryl Alcohol with Short-Chain Carboxylic Acids at 298.15 K. Asian Journal of Chemistry, 31(4), 820–824. https://doi.org/10.14233/ajchem.2019.21746
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