M.A. Kovaleva a)*, V.A. Fedorov b)**, V.A. Ganja a)***, V.G. Shram a)****, N.N. Lysyannikova a)*****
a) Siberian Federal University, Krasnoyarsk, 660041 Russia
b) Siberian State Technological University, Krasnoyarsk, 660049 Russia
E-mail: *Lera0727@yandex.ru, **email@example.com, ***Vladimirganzha@yandex.ru, ****firstname.lastname@example.org, *****email@example.com
Full text PDF
Despite the presence of a large amount of factual material on thermodynamic parameters of complexation of agents in different solvents, including mixed ones, obtained knowledge is specific in nature. In order to identify more general patterns, studies are relevant that would allow to interpret the obtained data taking into account the interaction between chemical forms in solutions.
This paper presents a general approach to studying weak ionic interactions in solutions that allows to simultaneously determine the constants of these interactions and the parameters characterizing the influence of changes in the ionic environment on these constants by the example of chlorides and bromides of alkali metals.
The obtained constants for hydrosulfate-ion formation and the imperfection parameters can be a reference material for more accurate calculation of the concentration of hydrogen ions in sulfuric acid solutions. The developed approach and patterns identified in the work can be used to study the balanced states for formation of low and medium stable complexes.
Keywords: solubility, hydrosulfate ion, environmental effects
Fig. 1. Dependence of the complexation function F on Сн+ for the bromide and chloride system at I = 4.
- Shkol'nikov E.V. Thermodynamic calculation of the solubility of solid hydroxides of group IIIa elements in water and aqueous media. Russ. J. Appl. Chem., 2008, vol. 81, no. 9, pp. 1503–1507.
- Mironov. I.V. The Effect of Environment and Complex Formation in Solutions of Electrolytes. Novosibirsk, Izd. INKh Sib. Otd. Ross. Akad. Nauk, 2003, 238 p. (In Russian)
- Fedorov V.A., Belevantsev V.I., Batalina L.S. Secondary environment effects on the first step of the protonation of SO42- in saline aqueous solutions. Russ. J. Phys. Chem., 2006, vol. 80, no. 2, pp. 200–204.
- Bjerrum J. Determination of small stability constants. A spectrophotometric study of copper(II) chloride complexes in hydrochloric acid. Acta Chem. Scand., Ser A, 1976, vol. 41, no. 6, pp. 328–334.
- Fletcher A.N. Bisulphate dissociation quotient in mixed electrolytic solutions. J. Inorg. Nucl. Chem., 1964, vol. 26, no. 6, pp. 955–960.
- Batalina L.S. Effects of environment in the formation of hydrosulphate ion in water-salt solutions. Cand. Chem. Sci. Diss. Krasnoyarsk, 2006. 117 p. (In Russian)
- Vasil'ev V.P. Thermodynamic Properties of Electrolytes. Moscow, Vyssh. Shk., 1982. 317 p. (In Russian)
For citation: Kovaleva M.A., Fedorov V.A., Ganja V.A., Shram V.G., Lysyannikova N.N. Formation of hydrogen-ion in isomolar solution of hydrochloric and hydrobromic acids and their salts. Uchenye Zapiski Kazanskogo Universiteta. Seriya Estestvennye Nauki, 2016, vol. 158, no. 3, pp. 381–390. (In Russian)
The content is available under the license Creative Commons Attribution 4.0 License.