International Science Community Association Research Journal of Chemical Sciences 15 1 2025 02 18 Estimation of internal pressure and pseudo-gruneisen parameter of binary liquid mixtures from 288.15-318.15K 29 38 EN Zaware Sandeep 1 Synergen Bio Private Limited, Old Mumbai - Pune Highway, Wakadewadi, Shivajinagar, Pune, Maharashtra - 411003, India Lahoti Neel 2 Synergen Bio Private Limited, Old Mumbai - Pune Highway, Wakadewadi, Shivajinagar, Pune, Maharashtra - 411003, India Shinde Hrushikesh 3 Synergen Bio Private Limited, Old Mumbai - Pune Highway, Wakadewadi, Shivajinagar, Pune, Maharashtra - 411003, India Bhatia Swati 1 Sage University, Indore, India Upadhyay Siya 2 Sage University, Indore, India Doco Rodrigue Chabi 1 Laboratory of Chemical Physics-Materials and Molecular Modeling (LCP3M) University of Abomey-Calavi (UAC), 03 BP 3409 Cotonou – Benin Koudjina Simplice 2 Laboratory of Chemical Physics-Materials and Molecular Modeling (LCP3M) University of Abomey-Calavi (UAC), 03 BP 3409 Cotonou – Benin and National High School of Applied Biosciences and Biotechnologies (ENSBBA) National University of Sciences, Technologies, Engineering and Mathematics (UNSTIM), BP 486 Abomey, Sogbo-Aliho – Benin Houngue Alice M.T. Kpota 3 Laboratory of Chemical Physics-Materials and Molecular Modeling (LCP3M) University of Abomey-Calavi (UAC), 03 BP 3409 Cotonou – Benin Atohoun Guy Y.S. 4 Laboratory of Chemical Physics-Materials and Molecular Modeling (LCP3M) University of Abomey-Calavi (UAC), 03 BP 3409 Cotonou – Benin Sharma Nikita 1 Department of Chemistry, Govt. Meera Girls College, MLSU Udaipur, Rajasthan, India Ahuja Mamta 2 Department of Chemistry, Govt. Meera Girls College, MLSU Udaipur, Rajasthan, India Awasthi Naveen 1 Department of Chemistry, Janta College Bakewar (206124), Etawah, India > Research Article 2024 10 8 2025 02 18 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. Copyright@ International Science Community Association