Thermodynamics of mixing for binary mixtures of 1-octanol and 1-decanol with n-dodecane and ternary mixture of (TBP + 1-octanol + dodecane) at T = (298.15 to 323.15) K |
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| Institution: | 1. Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India;2. Department of Chemistry, Shyamsunder College, Shyamsunder 713424, India;3. Chemistry Group, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India;1. Departamento de Ingeniería Electromecánica, Escuela Politécnica Superior, Universidad de Burgos, E-09006 Burgos, Spain;2. Institut Supérieur des Professions Infirmières et Techniques de Santé Tétouan – Annexe Tanger, 93040 Tétouan, Morocco;3. Ecole Nationale des Sciences Appliquées d’El Jadida, Université Chouaib Doukkali-El Jadida, 24002 El Jadida Plateau, Morocco;1. Department of Chemistry and Coimbra Chemistry Centre, University of Coimbra, 3004-535 Coimbra, Portugal;2. Faculty of Pharmacy, University of Coimbra, 3000-295 Coimbra, Portugal;3. Department of Chemistry, St. Francis Xavier University, Antigonish, Nova Scotia B2G 2W5, Canada;1. Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal;2. Instituto Superior de Engenharia de Lisboa, Departamento de Engenharia Química, R. Conselheiro Emídio Navarro, 1, 1959-007 Lisboa, Portugal;3. Universidade Aberta, R. da Escola Politécnica, 147, 1269-001 Lisboa, Portugal;1. Department of Earth Sciences, University College London, Gower Street, London WC1E 6BT, United Kingdom;2. Dipartimento di Chimica e Farmacia, Universita degli Studi di Sassari, Istituto Officina dei Materiali del CNR, UOS SLACS, Via Vienna 2, 07100 Sassari, Italy;3. Departament de Física, Universitat Politecnica de Catalunya, Campus Nord B4-B5, Barcelona 08034, Spain |
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| Abstract: | Densities (ρ) and speed of sound (u) of the binary mixtures of 1-octanol and 1-decanol with dodecane and ternary mixture of {1-octanol + tributyl phosphate (TBP) + dodecane} were measured at temperatures from (298.15 to 323.15) K over the entire composition range and at atmospheric pressure. Using these experimentally determined quantities, the excess molar volume (VE), excess isentropic compressibility () for the binary mixtures and internal pressure (pi) of (alcohol + dodecane) binary mixtures have been calculated. The deviations shown by the excess quantities have been interpreted in terms of intermolecular interactions and structure of components. Using Hildebrand regular solution theory, several other parameters like the enthalpy and entropy of mixing of the binary components have been obtained. From acoustic measurements, the probable dimerization constant of the alcohols has also been determined. The values of these parameters give an indication of the subtle structural changes that occur in these binary mixtures. |
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| Keywords: | Density Speed of sound Excess parameters Tributyl phosphate Dodecane Alcohols |
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