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Enthalpies and constants of dissociation for D,L-Alanyl-D,L-Serine at 298 K

  • Chemical Thermodynamics and Thermochemistry
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Abstract

Protolytic equilibria in aqueous solutions of D,L-alanyl-D,L-serine are studied by means of potentiometry and calorimetry. The dissociation constants and thermal effects of this reaction of the dipeptide are determined at 298.15 K and ionic strengths of 0.1, 0.3, 0.5, and 1.0 (KNO3). The standard thermodynamic characteristics (pK°, Δr G°, Δr H°, and Δr S°) of the studied equilibria are calculated. The final results are compared with the corresponding data on the related compounds.

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Authors and Affiliations

  1. Ivanovo State University of Chemistry and Technology, Ivanovo, 153000, Russia

    S. N. Gridchin

  2. Ivanovo State University, Ivanovo, 153460, Russia

    D. F. Pyreu

Authors
  1. S. N. Gridchin
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  2. D. F. Pyreu
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Correspondence to S. N. Gridchin.

Additional information

Original Russian Text © S.N. Gridchin, D.F. Pyreu, 2015, published in Zhurnal Fizicheskoi Khimii, 2015, Vol. 89, No. 1, pp. 5–8.

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Gridchin, S.N., Pyreu, D.F. Enthalpies and constants of dissociation for D,L-Alanyl-D,L-Serine at 298 K. Russ. J. Phys. Chem. 89, 1–4 (2015). https://doi.org/10.1134/S0036024415010082

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  • DOI: https://doi.org/10.1134/S0036024415010082

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