Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/102250
Type: Artigo de evento
Title: Experimental Study And Modelling Using The Eras-model Of The Excess Molar Volume Of Acetonitrile-alkanol Mixtures At Different Temperatures And Atmospheric Pressure
Author: Torres R.B.
Francesconi A.Z.
Volpe P.L.O.
Abstract: Densities of {(1-x)CH 3(CH 2) n-1OH + xCH 3CN} for n=1, 2, 3 or 4 have been determined as a function of composition at 288.15, 293.15, 298.15 and 303.15K at atmospheric pressure using a vibrating-tube densimeter (Anton Paar DMA 4500, resolution 1×10 -5gcm -3). Excess molar volumes were calculated. The V m E values were negative for acetonitrile-methanol mixtures and sigmoid for acetonitrile-alkanols (C 2-C 4) mixtures over the complete mole fraction range. V m E values increase in a positive direction with increase in chain length of the alkanols and with the temperature. The Extended Real Associated Solution Model (ERAS-Model) calculations allowing for self-association for the alkanols and complex formation between acetonitrile and alkanols have been used to correlate experimental data. The model is able to reproduce the asymmetrical V m E behavior of the studied systems, although agreement between theoretical and experimental values is less satisfactory for some concentration ranges. © 2003 Elsevier Science B.V. All rights reserved.
Editor: 
Rights: fechado
Identifier DOI: 10.1016/S0378-3812(03)00167-5
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-0037675731&partnerID=40&md5=2ce3940d321edaee0b33a2e1bec2d2a8
Date Issue: 2003
Appears in Collections:Unicamp - Artigos e Outros Documentos

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