Ultrasonic studies on binary mixtures of some aromatic ketones with acetonitrile at T = 308.15 K |
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| Affiliation: | 1. Laboratory of Ageing and Pharmacology, Kolling Institute of Medical Research, Sydney, NSW, Australia;2. Depts of Clinical Pharmacology and Aged Care, Royal North Shore Hosp, Sydney, NSW, Australia;3. Sydney Medical School, Univ of Sydney, Sydney, NSW, Australia;4. Gastroenterology Dept, Royal North Shore Hosp, Sydney, NSW, Australia;5. Pathology Dept, Royal Prince Alfred Hosp, Sydney, NSW, Australia;6. Ageing and Alzheimers Institute, Concord Hospital, Australia;7. Centre for Education and Research on Ageing, Concord Hospital and University of Sydney, Australia;8. ANZAC Research Institute, Concord Hospital and University of Sydney, Australia;9. Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, USA |
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| Abstract: | The speed of sound and density of acetophenone, propiophenone, para-methyl acetophenone, and para-chloro acetophenone with acetonitrile have been measured over the entire range of mole fraction at T = 308.15 K. From the experimentally determined data, values of deviations in speed of sound, isentropic compressibility, and intermolecular free-length have been computed. The deviation in isentropic compressibility ΔκS is fitted to a Redlich–Kister type equation. The deviation in speed of sound is positive where as the deviations in isentropic compressibility and intermolecular free length are negative for all the systems. This trend indicates that the specific interactions are operative between unlike molecules. The reactivity order of ketones with acetonitrile is para-chloro acetophenone > para-methyl acetophenone > acetophenone > propiophenone. |
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