Solubility of potassium benzoate and homoassociation of benzoic acid in acetone containing 5 mole percent DMSO

Keywords: potassium benzoate, benzoic acid, acetone, dimethylsulfoxide, solubility, solubility product, homoassociation, dimerization

Abstract

The solubility of potassium benzoate was studied in a mixed solvent acetone–DMSO, molar ratio 95 : 5, at 25oC without and with addition of benzoic acid (0.015 to 0.50 mol L–1). In search for an adequate equilibrium model for fitting the experimental data, the CLINP program was applied. Following values of equilibrium constants were estimated: the indices of the solubility product for KA, pKsp  = 8.38 (s = 0.18); the logarithm of the formation constant of HA2, LogKHA2 = 4.14 (s = 0.21); the logarithm of the dimerization constant of benzoic acid, (HA)2: log Kdim  = 0.73 (s = 0.37). The pKa = 14.03 value of benzoic acid in this solvent, determined and reported previously, was used in the calculations.

Downloads

Download data is not yet available.

References

D. Yu. Filatov, S. T. Goga, V. G. Panchenko, N. O. Mchedlov–Petrоssyan // Vi'snik Harki'vs'kogo naci'onal'nogo uni'versitetu. – 2007. – Vol. 15 (38), N 770. – P. 263–267.

N. O. Mchedlov-Petrossyan, D. YU. Fi'latov, S. T. Goga, A. V. Lebed' // Dopovi'di' Naci'on-al'noi` akademi'i` nauk Ukrai`ni. – 2008. – N 9. – P. 119–123. (Rus.)

D. YU. Filatov, S. T. Goga, A. V. Lebed', P. V. Efimov, N. O. Mchedlov–Petrossyan // Vi's-nik Harki'vs'kogo naci'onal'nogo uni'versitetu. – 2008. – Vol. 16 (39), N 820. – P. 262–267. (Rus.)

N. O. Mchedlov–Petrоssyan, D. Yu. Filatov, S. T. Goga and A. V. Lebed // J. Phys. Org. Chem. – 2010. – Vol. 23, N 5. – P. 418–430.

Kolthoff I. M. / Anal. Chem. 1974. – Vol. 46, N 13. – P. 1992–2003.

Kolthoff I. M., Ikeda S. // J. Phys. Chem. – 1961. – Vol. 65, N 6. – P. 1020–1026.

I. M. Kolthoff, M. K. Chantooni, S. Bhowmik // J. Amer. Chem. Soc. – 1966. – Vol. 88, N. 23. – P. 5430-5439.

D. Konyaev, S. Myerniy, Y. Kholin, CLINP Program, http://www-chemo.univer.kharkov.ua/kholin/clinp.html.

C. Reichardt, T. Welton / Solvents and Solvent Effects in Organic Chemistry. – Weinheim: Wiey–VCH. – 2011. – 692 p.

Published
2017-12-27
Cited
How to Cite
Goga, S. T., Kholin, Y. V., Efimova, N. V., Isayenko, Y. V., & Mchedlov-Petrossyan, N. O. (2017). Solubility of potassium benzoate and homoassociation of benzoic acid in acetone containing 5 mole percent DMSO. Kharkiv University Bulletin. Chemical Series, (29), 69-74. https://doi.org/10.26565/2220-637X-2017-29-07

Most read articles by the same author(s)