JEEP 2009, 00024 (2009)
DOI: 10.1051/jeep/200900024

Experimental and Predicted Excess Molar Volumes of Ternary Mixtures (1-chlorobutane or 2-methyl, 2-chloro propane) + n-heptane + 2-pentanone at T=298,15 K

O. Tafat-Igoudjilene, L. Mostefai and A. Ait Kaci

Laboratoire de Thermodynamique et modélisation moléculaire, Faculté de Chimie. Université des Sciences et de la Technologie Houari Boumediene, B.P. 32, El Alia, 16111 Bab-Ezzouar, Alger, Algérie

Tafwah2002@yahoo.fr

Published online: 4 December 2009

Abstract
Densities, ρ , at 298.15 K and atmospheric pressure have been measured over the entire composition range for the ternary systems (2-methyl, 2-chloro propane or 1-chlorobutane) + n-heptane + 2-pentanone and for five corresponding binary systems. Excess molar volumes, V^E, were evaluated for the binary and ternary systems. The V^E results were correlated and fitted using the Redlich-Kister equation for the binary mixtures and the Nagata Tamura equation for the ternary mixtures, as a function of mole fraction. Several predictive empirical relations were applied to predict the excess volumes of ternary mixtures from the binary mixing data and analyzed to gain insight about liquid mixture interactions. The excess molar volumes for the two ternary systems are positive over the entire range of composition for three fixed composition f_m = x₁ / x₂

Key words: Excess molar volumes -- Chloroalkanes -- n-heptane -- 2-pentanone -- Molecular interactions -- Correlation


© Owned by the authors, published by EDP Sciences 2009