Excess molar volumes,and excess molar enthalpies of (N-methyl-2-pyrrolidinone + an ether ) at the temperature 298.15 K |
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| Institution: | 1. Faculty of Chemistry, Physical Chemistry Division, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland;2. Department of Chemistry and Applied Chemistry, University of Natal, Durban 4041, South Africa;1. Center for Fuel Cell Innovation, State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science & Technology, Wuhan 430074, China;2. Research Center for Engineering Technology of Polymeric Composites of Shanxi Province, School of Materials Science and Engineering, North University of China, TaiYuan 030051, China;3. School of Automation, Huazhong University of Science & Technology, Wuhan 430074, China;1. Department of Chemistry, The George Washington University, 800 22nd Street NW, Washington, DC, 20052, United States;2. Department of Chemistry, Hampden-Sydney College, Hampden-Sydney, VA 23943, United States;3. Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California Davis, One Shields Avenue, Davis, CA 95616, United States;1. Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi-shi, Chiba 274-8510, Japan;2. Faculty of Pharmaceutical Sciences, Yokohama College of Pharmacy, 601 Matano-cho, Totsuka-ku, Yokohama-shi, Kanagawa 245-0066, Japan |
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| Abstract: | Excess molar volumes VmE have been calculated from measured density values over the whole composition range at T = 298.15 K and atmospheric pressure for six { N -methyl-2-pyrrolidinone + 1,1-dimethylethyl methyl ether, or dipropyl ether, or 1,1-dimethylpropyl methyl ether, or diisopropyl ether, or dibutyl ether, or dipentyl ether}. Excess molar enthalpiesHmE were also measured for five { N -methyl-2-pyrrolidinone + 1,1-dimethylethyl methyl ether, or dipropyl ether, or 1,1-dimethylpropyl methyl ether, or diisopropyl ether, or dibutyl ether} at T = 298.15 K and atmospheric pressure. The results are discussed in terms of intermolecular associations. The experimental results have been correlated with the UNIQUAC and NRTL equations. |
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