The Dimerization Effects of Some Solutes on the Partition Coefficient kD in Binary Immiscible Solvents

Onyeocha, Veronica O.; Akpan, O.D.; Onuchukwu, Ikejiofor A.; Chidiebere, Maduabuchi A.

doi:10.18052/www.scipress.com/ILCPA.80.40

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The Dimerization Effects of Some Solutes on the Partition Coefficient k_D in Binary Immiscible Solvents

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Abstract:

The dimerization of a solute dissolved in binary immiscible solvents shows that the value of the partition coefficient, k_Dof the solutes are influenced by the dimerization constant, K of the solute in one of the solvents according to the description: (C_X^A)/(C_X^B ) = k_D + 2k_D²KC_x^B where C_x^A and C_x^B are the concentrations of the solute x in the solvents A and B respectively. Both k_D and K are parameters that predict the extent of beneficiation for most minerals. Also, k_Dis a fundamental parameter that determines the extent of solute recovery during solvent extraction. In this study, it is found that the order K k_D and K k_D are the effects for acetic and succinic acids respectively in the binary solvents composed of carbon tetrachloride/water and diethylether/water systems respectively. These results suggest that the distributions of these solutes in the solvents are accompanied by the formation of succinic anhydride which is more favoured than the dimerization of the acetic acid. Also, the changes in the values of distribution enthalpies, H_Dare corroborated to explain these experimental observations.

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Periodical:

International Letters of Chemistry, Physics and Astronomy (Volume 80)

Pages:

40-52

DOI:

https://doi.org/10.18052/www.scipress.com/ILCPA.80.40

Citation:

V. O. Onyeocha et al., "The Dimerization Effects of Some Solutes on the Partition Coefficient k_D in Binary Immiscible Solvents", International Letters of Chemistry, Physics and Astronomy, Vol. 80, pp. 40-52, 2018

Online since:

December 2018

Authors:

Veronica O. Onyeocha, O.D. Akpan, Ikejiofor A. Onuchukwu, Maduabuchi A. Chidiebere

Keywords:

Dimerization, Distribution Coefficient, Enthalpy, Immiscible Solvents

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Creative Commons Attribution 4.0 International License

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