The excess molar volumes and enthalpies of (N-methyl-2-pyrrolidinone + an alcohol) atT = 298.15 K and the application of the ERAS theory |
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| Institution: | 1. Department of Chemistry and Applied Chemistry, University of Natal, Durban, 4041, South Africa;2. Faculty of Chemistry, Physical Chemistry Division, Warsaw University of Technology, Noakowskiego 3, 00-664, Warsaw, Poland;1. School of Environmental & Municipal Engineering, North China University of Water Resources and Electric Power, ZhengZhou, He’nan 450011, People’s Republic of China;2. College of Chemistry & Chemical Engineering, YangZhou University, YangZhou, Jiangsu 225002, People’s Republic of China;1. College of Chemistry & Chemical Engineering, YangZhou University, YangZhou, Jiangsu 225002, People’s Republic of China;2. Guangling College, Yangzhou University, YangZhou, Jiangsu 225009, People’s Republic of China;1. Laboratory of Crystallography and Thermodynamic, Faculty of Chemistry, University of Sciences and Technology Houari Boumediene, BP 32, El Alia, Algiers, 16111, Algeria;2. Departamento de Química Física, Facultad de Ciencias, Universidad de Zaragoza, 50009, Zaragoza, Spain |
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| Abstract: | Excess molar volumes VmEatT = 298.15 K and atmospheric pressure are reported for (N -methyl-2-pyrrolidinone + propan-2-ol, or butan-1-ol, or butan-2-ol, or 2-methylpropan-1-ol ). TheVmE have been calculated from measured values of density using the vibrating tube technique. The results are discussed in terms of the hydrogen bonding and other intermolecular association. Excess molar enthalpiesHmE at T = 298.15 K and atmospheric pressure are reported for (N -methyl-2-pyrrolidinone + propan-1-ol, or propan-2-ol, or butan-1-ol, or butan-2-ol, or 2-methylpropan-1-ol). The HmEhave been obtained using flow calorimetry. The experimental results have been correlated and compared with the results from the Extended Real Associated Solution (ERAS) theory. The parameters adjusted to the mixtures properties are two cross association parameters and the interaction parameter responsible for the exchange energy of the van der Waals interactions. Self-association parameters of the alcohols and NMP are taken from the literature. |
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