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Thermodynamics of binary liquid mixtures: application of the Prigogine–Flory–Patterson theory to excess molar volumes of acetonitrile+1-alkanol systems |
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| Authors: | R B Trres A Z Francesconi P L O Volpe |
| Institution: | a Departamento de Engenharia Química, UNIFEI, 09850-091, São Bernardo do Campo, Sao Paulo, Brazil b Departamento de Engenharia de Sistemas Químicos, Faculdade de Engenharia Química, UNICAMP, C.P. 6066, 13083-970, Campinas, Sao Paulo, Brazil c Departamento de Físico-Química, Instituto de Química, UNICAMP, C.P. 6154, 13083-970, Campinas, Sao Paulo, Brazil |
| Abstract: | Excess molar volumes of {(1?xA)CH3(CH2)n?1OH+xACH3CN} for n=1, 2, 3 or 4 as a function of composition under atmospheric pressure at 288.15, 293.15, 298.15 and 303.15 K have been used to test the applicability of the Prigogine–Flory–Patterson theory. According to the model, interactional contribution is the most important one to explain the VmE behavior. Good agreement is only achieved for the mixtures containing methanol (C1) or 1-butanol (C4). For the mixtures containing ethanol (C2) and 1-propanol (C3), which show an S-shaped VmE behavior, the correlation fails. |
| Keywords: | Excess molar volume Prigogine–Flory–Patterson theory Acetonitrile 1-Alkanol |
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