Email this article Algorithm for calculating the dissociation constants of weak electrolytes and ampholites in water solutions
- Authors: Lysova S.S.1, Skripnikova T.A.1, Zevatskii Y.E.1,2,3
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Affiliations:
- St. Petersburg State University of Industrial Technologies and Design
- AO Novbytkhim
- St. Petersburg State Electrotechnical University (LETI)
- Issue: Vol 91, No 12 (2017)
- Pages: 2366-2369
- Section: Physical Chemistry of Solutions
- URL: https://journals.rcsi.science/0036-0244/article/view/169798
- DOI: https://doi.org/10.1134/S0036024417110139
- ID: 169798
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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.
About the authors
S. S. Lysova
St. Petersburg State University of Industrial Technologies and Design
Author for correspondence.
Email: lusovass@mail.ru
Russian Federation, St. Petersburg, 191186
T. A. Skripnikova
St. Petersburg State University of Industrial Technologies and Design
Email: lusovass@mail.ru
Russian Federation, St. Petersburg, 191186
Yu. E. Zevatskii
St. Petersburg State University of Industrial Technologies and Design; AO Novbytkhim; St. Petersburg State Electrotechnical University (LETI)
Email: lusovass@mail.ru
Russian Federation, St. Petersburg, 191186; Gatchina, 188304; St. Petersburg, 197376
