3.9 Article

Physicochemical parameters of the binary mixtures of formamide/N-methylformamide with 2-chloroethanol at different temperatures

期刊

PHYSICS AND CHEMISTRY OF LIQUIDS
卷 59, 期 5, 页码 795-805

出版社

TAYLOR & FRANCIS LTD
DOI: 10.1080/00319104.2020.1815019

关键词

Pseudo-Gruneisen parameter; Debye temperature; molecular interactions; binary liquid mixture

资金

  1. University Grants Commission India [20/12/2015(ii) EU-V]
  2. Council of Scientific and Industrial Research, India [09/107[0400]/2018-EMR-I]

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The study calculated various physicochemical parameters for binary liquid mixtures, which can help to explain the behavior of intermolecular interactions in the mixtures. The calculated values were found to be in good agreement with experimental results on sound propagation data.
The pseudo-Gruneisen parameter Gamma, effective Debye temperature theta(D), acoustic nonlinearity parameter B/A, internal pressure P-in and isobaric thermal expansion coefficient alpha have been evaluated for binary liquid mixtures of formamide (FA) and N-methylformamide (NMF) with 2-chloroethanol (2Cl-OH) at 298.15 K, 308.15 K and 318.15 K, over the entire concentration range. The excess pseudo-Gruneisen parameter Gamma(E), excess effective Debye temperature theta(E)(D), excess nonlinearity parameter(B/A)(E), excess internal pressure P-in(E) and excess isobaric thermal expansion coefficient alpha(E) were also calculated. The calculated values are reasonably satisfactory with the experimental results on sound propagation data of liquid mixtures. These physicochemical parameters play an important role in understanding of the significance of anharmonic and nonlinear behaviour with regard to intermolecular interactions in the liquid mixtures.

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