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Received February 22, 2010
Accepted May 3, 2010
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Viscosities of binary mixtures of ethanenitrile with benzene and several substituted benzenes
Department of Chemistry, D.D.U. Gorakhpur University, Gorakhpur - 273009, India 1Department of Chemistry, U. P. Autonomous College Varanasi, India
Korean Journal of Chemical Engineering, January 2011, 28(1), 256-260(5), 10.1007/s11814-010-0319-z
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Abstract
Viscosities (η) and densities (ρ) of five binary mixtures of ethanenitrile with benzene and several substituted benzenes viz methylbenzene, 1,4-dimethylbenzene, chlorobenzene and 1,2-dichlorobenzene have been experimentally determined at 308.15 K. Viscosity deviations (Δη) from the linear blending rule have been evaluated for all the mixtures studied. These are small with a maximum negative deviation of about 6% for binary mixture with benzene and maximum positive deviation of about 3% for mixture with 1,4-dimethylbenzene. Δη Values are fitted into Redlich - Kister equation and standard deviations in Δη values, σ (Δη) have been evaluated. The correlating performance of several viscosity models such as Grunberg - Nissan, Katti and Chaudhari, Hind-McLaughlin - Ubbelohde and Sedgwick has been evaluated. Grunberg-Nissan viscosity model is suitable for viscosities of several binary systems studied. The results are discussed in terms of molecular interactions between the components of binary mixtures.
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