E. Kvaratskhelia, R. Kurtanidze
2018
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Abstract
The original method suggested by authors for the analysis of processes of electrolytic dissociation of weak multibasic organic acids was used for the calculation of dissociation parameters of ethyl derivatives of succinic acids: DL-2,3-diethylsuccinic and meso-2,3diethylsuccinic acids. The values of dissociation degrees of separate steps (including “partial” dissociation degrees of the second step), concentrations of various ionized and non-ionized forms, activity coefficients of hydrogen ions and mono and dianions in the dilute (0.0001-0.01M) solutions of these acids have been calculated. The concentration intervals of predominance of various charged and uncharged substances in the dilute solutions of the above mentioned acids determined. Also suggested are simple empirical equations for fast approximate calculation of the dissociation parameters.