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Estimation of internal pressure and pseudo-gruneisen parameter of binary liquid mixtures from 288.15-318.15K

Author Affiliations

  • 1Department of Chemistry, Janta College Bakewar (206124), Etawah, India

Res.J.chem.sci., Volume 15, Issue (1), Pages 29-38, February,18 (2025)

Abstract

From the knowledge of thermal expansion coefficient (α) and isothermal compressibility (βT), various thermodynamic properties were analyzed from the experimental values of density and acoustical parameters for different binary liquid mixtures. In present investigation, mixtures of isomeric alcohols with saturated hydrocarbon at different temperatures over the whole range of mole fraction and one atmospheric pressure were used to determine the theoretical values of internal pressure (Pi), pseudo-gruneisen parameter (Γ) and their excess values. Flory’s statistical theory, Ramaswamy model and model proposed by Glinski were used determine the aforesaid properties and analyze the behaviour of liquid mixtures in terms of the interaction forces acting between the components. Absolute average percent deviation (AAPD) was considered as the criterion for the success of results. Experimental values of properties were utilized to determine the numerical coefficients (Ai) and standard deviation (δ) by redlich- kister equation. Excess values (ΓE) were used to analyze the interactions present between the components of liquids at different temperatures. Non-associated model deals fair agreement in comparison to associated models except few points.

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