Densities, excess molar volumes, and refractive indices of ethyl acetate and aromatic hydrocarbon binary mixtures

✍ Scribed by J.M. Resa; C. González; S. Ortiz de Landaluce; J. Lanz

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 95 KB
• Volume: 34
• Category: Article
• ISSN: 0021-9614
• DOI: 10.1006/jcht.2002.0964

✦ Synopsis

Densities, excess molar volumes, refractive indices, and changes in refractive index on mixing for (ethyl acetate + benzene, or methylbenzene, or ethylbenzene, or 1-4-dimethylbenzene, or 1-methylethylbenzene, or 1-3-5-trimethylbenzene, or 1-1dimethylethylbenzene) have been determined at T = 298.15 K. The excess molar volumes and changes in refractive index have been fitted to Redlich-Kister polynomials. The π-electrons interactions of the benzene ring and the peculiar plate shape of the aromatic molecules are noticeably modified by the presence of the ethyl acetate molecules of a different nature. The intermolecular interactions are strongly modified and result in positive excess volumes except for toluene or p-xylene whose values are close to zero. The refractive indices were compared with calculated values using mixing rules proposed by several authors.