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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 33, Number 5
BKCSDE 33(5)
May 20, 2012 

Excess Volumes, Speeds of Sound, Isentropic Compressibilities and Viscosities of Binary Mixtures of N-Ethyl Aniline with Some Aromatic Ketones at 303.15 K
M. Gowrisankar, S. Sivarambabu,* P. Venkateswarlu, K. Siva Kumar
Ultrasonic speed, Viscosity, Excess volume, N-Ethyl aniline, Ketone
Densities (ρ), Viscosities (η) and ultrasonic speeds (u) of pure acetophenone (AP), propiophenone (PP), p-methyl acetophenone (p-MeAP), p-chloroacetophenone (p-ClAP) and those of their binary mixtures with N-ethyl aniline (N-EA) as a common component, were measured at 303.15 K over the entire composition range. These experimental data were used to calculate the excess volume VE, deviation in ultrasonic speeds Δu, isentropic compressibility Ks, intermolecular free length Lf, acoustic impedance Z, deviations in isentropic compressibility ΔKs, deviation in viscosity Δη and excess Gibbs free energy of activation of viscous flow (G*E) at all mole fractions of N-ethyl aniline. These parameters, especially excess functions, are found to be quite sensitive towards the intermolecular interactions between component molecules. Theoretical values of viscosity of the binary mixtures were calculated using different empirical relations and theories. The relative merits of these relations and theories were discussed. The experimental results were correlated by using the polynomial proposed by Redlich-Kister equation.
1686 - 1692
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