Temperature dependence of the excess molar volume of (heptane + 1-chloroalkane) |
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| Affiliation: | 1. School of Advanced Sciences, Vellore Institute of Technology, Vellore, India;2. Centre for Functional Materials, Vellore Institute of Technology, Vellore, India;1. Pharmacognosy Laboratory, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Av. Ipiranga 2752, Porto Alegre, RS 90610-000, Brazil;2. Department of Environmental Impact Assessment, Unilasalle, Av. Victor Barreto 2288, Canoas, RS 92010-000, Brazil;3. School of Health Sciences, University of Vale do Itajaí – UNIVALI, R. Uruguai, 458, Itajaí, SC 88302-901, Brazil;4. Pharmacognosy Laboratory, Life Sciences Knowledge Area, University of Caxias do Sul – UCS, St. Ernesto Zaparolli 496, Caxias do Sul, RS 95059-848, Brazil;5. Postgraduate Program in Pharmaceutical Sciences, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil;1. Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND 58102, United States;2. Department of Civil Engineering, University of North Dakota, Grand Forks, ND 58202, United States;3. Department of Plant Sciences, North Dakota State University, Fargo, ND 58108, United States;4. Research Computing, Information Technology at Purdue (ITaP), Purdue University, West Lafayette, IN 47907, United States;1. Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA;2. Theoretical Separation Science Laboratory, Kroungold Analytical Inc., 1299 Butler Pike, Blue Bell, PA 19422, USA;1. Department of Chemistry, University of Louisville, Louisville, KY 40208, USA;2. Center for Regulatory and Environmental Analytical Metabolomics, University of Louisville, Louisville, KY 40208, USA;3. Biostatistics Core, Karmanos Cancer Institute, Department of Oncology, School of Medicine, Wayne State University, Detroit, MI 48201, USA;4. Institute of Molecular Cardiology, University of Louisville, Louisville, KY 40208, USA;5. Diabetes and Obesity Center,University of Louisville, Louisville, KY 40208, USA;6. Department of Medicine, University of Louisville, Louisville, KY 40208, USA;7. Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY 40208, USA;8. Robley Rex Louisville VAMC, Louisville, KY 40208, USA |
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| Abstract: | The densities of (heptane + 1-chlorobutane, or 1-chloropentane, or 1-chlorohexane) were measured at the temperatures (308.15, 318.15, and 328.15) K by means of a vibrating-tube densimeter. The excess molar volumes, VmE, calculated from the density data, along with our previous data(1) determined at T=298.15 K for the same systems, provide the temperature dependence of VmE in the temperature range of 298 to 328 K. The VmE results were correlated using the fourth-order Redlich–Kister equation, with the maximum likelihood principle applied for the determination of the adjustable parameters. It was found that the deviations from ideal behaviour (both positive and negative) in the systems studied increase with increasing temperature. |
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