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Comparison of certain methods of calculating the stability constants of complexes according to the data of pH titration

  • Physical Chemistry
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Bulletin of the Academy of Sciences of the USSR, Division of chemical science Aims and scope

Conclusions

  1. 1.

    The stability constants of samarium mono- and ditartrate were calculated by the following methods: a) by the method of least squares (MLS); b) by the Bjerrum method (variation 2); c) by the method of potentiometric surfaces (MPS) (variation 3).

  2. 2.

    The method of potentiometric surfaces permits a determination of the concentration of the free ligand with high accuracy within a broad range of pH values.

  3. 3.

    The values of the stability constants obtained according to the MPS are in good agreement with the values found by other methods (MLS and Bjerrum).

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Literature cited

  1. F. Rossotti and H. Rossotti, Determination of the Stability Constants and Other Equilibrium Constants in Solutions [Russian translation], Chapters V and VII, Mir (1965).

  2. J. Lefebvre, Compt. Rend.,241, 1037 (1955).

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  3. J. Lefebvre, J. Chim. Phys. et Phys.-Chim. Biol.,54, 553 (1957).

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  4. N. A. Dobrynina, L. I. Martynenko, and Vikt. I. Spitsyn, Izv. Akad. Nauk SSSR, Ser. Khim., 2203 (1968).

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Authors and Affiliations

  1. M. V. Lomonosov Moscow State University, USSR

    N. A. Dodrynina, L. I. Martynenko & Vikt I. Spitsyn

Authors
  1. N. A. Dodrynina
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  2. L. I. Martynenko
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  3. Vikt I. Spitsyn
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Additional information

Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 5, pp. 1000–1005, May, 1969.

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Dodrynina, N.A., Martynenko, L.I. & Spitsyn, V.I. Comparison of certain methods of calculating the stability constants of complexes according to the data of pH titration. Russ Chem Bull 18, 912–917 (1969). https://doi.org/10.1007/BF00922840

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  • DOI: https://doi.org/10.1007/BF00922840

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