Excess Thermodynamic Properties for Binary Mixtures of Ionic Liquid 1-Ethyl-3-methylimidazolium Ethyl Sulfate and 2-Methoxyethanol from T = (298.15 to 328.15) K at Atmospheric Pressure

M. Srinivasa Reddy, K. Thomas S.S. Raju, Sk Md Nayeem, Imran Khan, K. B.M. Krishana, B. Hari Babu

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The density (ρ), speed of sound (u) and refractive index (nD) for pure [Emim][EtSO4], 2-methoxyethanol and their binary mixtures were measured using an Anton Paar vibrating tube density and sound velocity meter (DSA 5000 M) and automatic refractometer over the whole composition range as a function of temperature between 298.15 and 328.15 K in steps of 10 K at atmospheric pressure. Experimental values were used to calculate the excess values of molar volumes (Vm E), partial molar volumes (V¯ m E), partial molar volumes at infinite dilution (V¯ m E, ∞), isentropic compressibility (κSE), acoustic impedance (ZE), free length (Lf E), speeds of sound (uE), internal pressure (πiE), free volume (Vf E) and deviations in refractive index (Δ ϕ nD) for the binary mixtures. These properties were fitted to a Redlich–Kister type equation to obtain the binary coefficients and the standard deviations. The negative values of Vm E, κSE, Lf E,αpE, and Vf E and positive values for ZE, uE,πiE, and Δ ϕ nD indicate the existence of strong interactions between the components. This was further supported by IR spectroscopy analysis.

Original languageEnglish
Pages (from-to)675-701
Number of pages27
JournalJournal of Solution Chemistry
Volume45
Issue number5
DOIs
Publication statusPublished - May 1 2016

Fingerprint

Ionic Liquids
Atmospheric Pressure
Acoustic wave velocity
Binary mixtures
Thermodynamics
Density (specific gravity)
binary mixtures
Atmospheric pressure
sulfates
atmospheric pressure
Refractometry
Thermodynamic properties
thermodynamic properties
Refractive index
liquids
Refractometers
Acoustic impedance
Free volume
Electric Impedance
Compressibility

Keywords

  • 2-Methoxyethanol
  • Density
  • Excess/deviation parameters
  • Refractive index
  • Speed of sound
  • [Emim][EtSO]

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Physical and Theoretical Chemistry

Cite this

Excess Thermodynamic Properties for Binary Mixtures of Ionic Liquid 1-Ethyl-3-methylimidazolium Ethyl Sulfate and 2-Methoxyethanol from T = (298.15 to 328.15) K at Atmospheric Pressure. / Reddy, M. Srinivasa; Raju, K. Thomas S.S.; Nayeem, Sk Md; Khan, Imran; Krishana, K. B.M.; Babu, B. Hari.

In: Journal of Solution Chemistry, Vol. 45, No. 5, 01.05.2016, p. 675-701.

Research output: Contribution to journalArticle

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abstract = "The density (ρ), speed of sound (u) and refractive index (nD) for pure [Emim][EtSO4], 2-methoxyethanol and their binary mixtures were measured using an Anton Paar vibrating tube density and sound velocity meter (DSA 5000 M) and automatic refractometer over the whole composition range as a function of temperature between 298.15 and 328.15 K in steps of 10 K at atmospheric pressure. Experimental values were used to calculate the excess values of molar volumes (Vm E), partial molar volumes (V¯ m E), partial molar volumes at infinite dilution (V¯ m E, ∞), isentropic compressibility (κSE), acoustic impedance (ZE), free length (Lf E), speeds of sound (uE), internal pressure (πiE), free volume (Vf E) and deviations in refractive index (Δ ϕ nD) for the binary mixtures. These properties were fitted to a Redlich–Kister type equation to obtain the binary coefficients and the standard deviations. The negative values of Vm E, κSE, Lf E,αpE, and Vf E and positive values for ZE, uE,πiE, and Δ ϕ nD indicate the existence of strong interactions between the components. This was further supported by IR spectroscopy analysis.",
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