Density, Refractive Index, and Related Properties for 2Butanone + n Hexane Binary Mixtures at Various Temperatures (original) (raw)
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International Journal of Thermophysics, 2004
The densities, ρ, viscosities, η, and refractive indices, n, of binary mixtures of benzene with 1-butanol, 2-methyl-1-propanol, 2-butanol, and 2-methyl-2-propanol, including those of the pure liquids, were measured over the complete composition range at 30°C. The dependence of ρ, η, and n on composition was checked by using an empirical relation. The experimental data were used to calculate excess molar volumes, V E, deviations in viscosity, Δ η, excess free energies of activation of viscous flow, G *E, deviations in refractive index, Δn, apparent molar volumes, V ϕ,1 and V ϕ, 2, and partial molar volumes, , of benzene in alcohols and alcohols in benzene, respectively, at infinite dilution. The variations of these parameters with composition and the effect of branching in alcohols were discussed from the point of view of intermolecular interactions in these mixtures.
Bistua: Revista de la Facultad de Ciencias Básicas, 2010
Refractive indices and densities of binary mixtures of ethanol + hexane, heptane, octane and water have been determined experimentally over the entire range of composition at (293.15, 298.15, 303.15, 308.15) K and at atmospheric pressure. The excess molar volume and changes of refractive indices D n on mixing data were fitted to the fourth order Redlich-Kister equation for the determination of the adjustable parameters. The corresponding excess molar volume and changes of Refractive indices values have been evaluated from the experimental data and fitted to a temperature dependent equation. The sign and magnitude of the calculated excess quantities have been discussed in terms of the nature of the solvent-solvent interactions in binary 2 mixtures.
Experimental Thermal and Fluid Science, 2013
Densities, viscosities, and refractive indices of mixing of methyl ethyl ketone with 1-pentanol, 2-pentanol, and 3-pentanol have been measured as a function of composition range at temperatures (298.15, 308.15, and 318.15) K and ambient pressure. Excess molar volumes V m E , viscosity deviations ∆η, and refractive index deviations ∆n D were calculated and correlated by the Redlich-Kister-type function to derive the coefficients and estimate the standard error. From the experimental data, partial molar volumes, V j m,i , and partial molar volumes at infinite dilution, V j m,i 0 , were also calculated. The latter values are interesting from a theoretical point of view since at infinite dilution the only interactions present are solute-solvent interactions. The effect of temperature and -OH group position of pentanol isomers on the excess molar volumes, viscosity, and refractive index deviations of its mixtures with methyl ethyl ketone is discussed in terms of the nature and type of intermolecular interactions in binary mixtures.
Refractive indices, densities and excess properties of binary mixtures ot ethanol, wtih hexane, hepatano, octane, and wáter have been determined experimentally over the entire range of composition at (293.15, 298.15, 303.15 and 308.15) . The excess molar volumen and changes of refractive índices on mising data were fitted to the fourth order Redlich Kister equation for the determination of the adjustable parameters.
Refractive index study on mixing properties of some binary liquid mixtures
2006
Department of Chemistry, Hemchandracharya North Gujarat University, Patan-384 265, Gujarat, India<br> E-mail : smridhee2000@yahoo.co.in<br> Manuscript recived 12 July 2005, revised 24 March 2006, accepted 4 April 2006 Uensity and refractive index have been experimentally determined for binary liquid mixtures of methyl acetate, ethyl<br> acetate, propyl acetate and butyl acetate with n-butanol, iso-butanol at 303.15 K, 308.15 K and 313.15 K. A comparative<br> study of Lurentz-Lurenz (L·L), Weiner (W), Heller (H), Gladstone-Dale (G-D), Arago-Biot (A-B), Eykman (Eyk), Newton<br> (Nw), Eyring- John (E·,I), Oster (Os) relations for determining the refractive index of a liquid has been carried out to<br> test their validity for the eight binaries uver the entire mole fra1 tion range of methyl acetate, ethyl acetate, propyl<br> acetate and butyl acetate at 303.15 K, 308.15 K, 313.15 K. Compa1·isun ofvarious mixing rules has been expressed<br>...
Arabian Journal of Chemistry, 2016
Densities and refractive indices were measured for the binary liquid mixtures formed by formamide, N-methylacetamide, di-methylformamide and di-methylacetamide with acetonitrile at T = 293.15, 298.15, 303.15, 308.15 and 313.15 K and atmospheric pressure over the whole concentration range. Lorentz-Lorentz mixing rule, Ramaswamy and Anbananthan model and model devised by Glinski were used to study the refractive index and molar refractivity. These results have been discussed to study the type of mixing behavior between the mixing molecules. The measured data were fitted to the Redlich-Kister polynomial relation to estimate the binary coefficients and standard errors. Furthermore, McAllister multibody interaction model is used to correlate the binary refractive index with the experimental findings. It is observed that molar refractivity, molecular interaction and association constant can be better understood from these models.
Journal of Chemical & Engineering Data, 1980
Densities and refractive indexes were determined for binary mixtures of methyl isobutyl ketone-2-butanol at temperatures of 20, 25, 30, and 35 OC and at atmospheric pressure. An empirical relation between density, composition, and temperature and, on the other hand, an empirical relation between refractive index, cornposition,
International Journal of Thermophysics, 2006
Experimental densities, ρ, and refractive indices, n D for binary liquid mixtures of benzene with triethylamine (TEA) and tributylamine (TBA) have been measured as a function of composition in the temperature range from 278.15 to 318.15 K. The excess molar volume, V E , and its temperature dependence, dV E /dT for the binary mixtures were calculated using the experimental data. The values of V E for the mixtures were also estimated by using the Flory statistical theory and refractive index.
Journal of Chemical Sciences, 2003
Density and refractive index have been experimentally determined for binary liquid mixtures of hexadecane and heptadecane with 1-butanol, 1-pentanol, 1hexanol and 1-heptanol at 298⋅15, 308⋅15 and 318⋅15 K. A comparative study of Lorentz-Lorenz (L-L), Weiner (W) and Heller (H), and Gladstone-Dale (G-D) relations for predicting the refractive index of a liquid has been carried out to test their validity for the eight binaries over the entire mole fraction range of hexadecane and heptadecane at the three temperatures. Comparison of various mixing rules has been expressed in terms of average percentage deviation. The performance of the Lorentz-Lorenz and Heller relations is relatively better than that of the Weiner and Gladstone-Dale relations.