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Russian Journal of Physical Chemistry A

, Volume 92, Issue 5, pp 922–926 | Cite as

Algorithm for Calculating the Dissociation Constants of Ampholytes in Nonbuffer Systems

  • S. S. Lysova
  • T. A. Skripnikova
  • Yu. E. Zevatskii
Physical Chemistry of Solutions

Abstract

An algorithm for calculating the dissociation constants of ampholytes in aqueous solutions is developed on the basis of spectrophotometric data in the UV and visible ranges without pH measurements of a medium and without buffer solutions. The proposed algorithm has been experimentally tested for five ampholytes of different strengths. The relative error of measuring dissociation constants is less than 5%.

Keywords

thermodynamic dissociation constant spectrophotometric method UV–visible range aqueous solutions 

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • S. S. Lysova
    • 1
  • T. A. Skripnikova
    • 1
  • Yu. E. Zevatskii
    • 1
    • 2
    • 3
  1. 1.St. Petersburg State University of Industrial Technologies and DesignSt. PetersburgRussia
  2. 2.ZAO NovbytkhimGatchinaRussia
  3. 3.St. Petersburg State Electrotechnical University (LETI)St. PetersburgRussia

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