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Vol. 30 No. 10 (2018): Vol 30 Issue 10, 2018

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Viscometric Studies of Binary Mixtures of Ethyl Acetoacetate with (C4-C9) Aliphatic Ketones at 298.15 K

https://doi.org/10.14233/ajchem.2018.21410
A.J. Kemeakegha
Department of Chemical Sciences, University of Port Harcourt, Port Harcourt, Rivers State, Nigeria
I.P. Ejidike
Applied Chemistry and Nanoscience Laboratory, Department of Chemistry, Vaal University of Technology, Vanderbijlpark, 1911, South Africa
A.A. Abia
Department of Chemical Sciences, University of Port Harcourt, Port Harcourt, Rivers State, Nigeria
E.D. Dikio
Applied Chemistry and Nanoscience Laboratory, Department of Chemistry, Vaal University of Technology, Vanderbijlpark, 1911, South Africa

Corresponding Author(s) : I.P. Ejidike

destinedchild12@gmail.com; ikechukwue@vut.ac.za

Asian Journal of Chemistry, Vol. 30 No. 10 (2018): Vol 30 Issue 10, 2018

Abstract

Kinematic viscosities (n) of binary mixtures of ethyl acetoacetate (EAA) + aliphatic ketones (C4-C9) have been determined as a function of composition at 298.15 K. The dynamic viscosity (η), excess viscosity and excess Gibbs free energy of activation for viscous flow, (ΔG*E) were also calculated. Excess viscosities (ηE) and excess Gibbs free energies of activation for viscous flow (ΔG*E) were calculated from the experimental viscosity data and were fitted to a Redlich-Kister type polynomial. The excess viscosity shows negative deviations over the entire range of solvents composition for the mixtures of (ethyl acetoacetate) + butan-2-one, hexan-2-one, heptan-2-one, octan-2-one and nonan-2-one and a positive deviation for the binary mixtures of ethyl acetoacetate + pentan-2-one system. The (ΔG*E) were all positive over the entire range solvents composition for the binary mixtures. The experimental results were used to test some semi-empirical equations to correlate viscosity-composition data.

Keywords

Binary mixtures Intermolecular interactions Excess viscosities Activation energies
Kemeakegha, A., Ejidike, I., Abia, A., & Dikio, E. (2018). Viscometric Studies of Binary Mixtures of Ethyl Acetoacetate with (C4-C9) Aliphatic Ketones at 298.15 K. Asian Journal of Chemistry, 30(10), 2231–2237. https://doi.org/10.14233/ajchem.2018.21410
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