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Algorithm for calculating the dissociation constants of weak electrolytes and ampholites in water solutions

  • Physical Chemistry of Solutions
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Abstract

An algorithm for calculating the dissociation constants of weak organic acids and bases in water solutions is developed on the basis of spectrophotometric data on the UV and visible regions without measuring the рН of the medium or using buffer solutions. The proposed algorithm is tested experimentally for six single-base acids and single-acid bases of different strengths. The relative error in determining the dissociation constants does not exceed 5% and is in agreement with the literature data.

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Authors and Affiliations

  1. St. Petersburg State University of Industrial Technologies and Design, St. Petersburg, 191186, Russia

    S. S. Lysova, T. A. Skripnikova & Yu. E. Zevatskii

  2. AO Novbytkhim, Gatchina, 188304, Russia

    Yu. E. Zevatskii

  3. St. Petersburg State Electrotechnical University (LETI), St. Petersburg, 197376, Russia

    Yu. E. Zevatskii

Authors
  1. S. S. Lysova
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  2. T. A. Skripnikova
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  3. Yu. E. Zevatskii
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Corresponding author

Correspondence to S. S. Lysova.

Additional information

Original Russian Text © S.S. Lysova, T.A. Skripnikova, Yu.E. Zevatskii, 2017, published in Zhurnal Fizicheskoi Khimii, 2017, Vol. 91, No. 12, pp. 2072–2076.

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Lysova, S.S., Skripnikova, T.A. & Zevatskii, Y.E. Algorithm for calculating the dissociation constants of weak electrolytes and ampholites in water solutions. Russ. J. Phys. Chem. 91, 2366–2369 (2017). https://doi.org/10.1134/S0036024417110139

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  • DOI: https://doi.org/10.1134/S0036024417110139

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