Effect of Temperature on the Thermodynamics of the Stepwise Dissociation of Alanyl-Phenylalanine in Aqueous Solutions

The heats of interaction between alanyl-phenylalanine and solutions of nitric acid and potassium hydroxide at 288.15 and 308.15 K and solution ionic strengths of 0.5, 0.75, and 1.0 are determined via calorimetry with KNO 3 . Standard thermodynamic characteristics (Δ r H °, Δ r G °, Δ r S °, ) of the...

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Bibliographic Details
Published in:Russian Journal of Physical Chemistry A 2023-03, Vol.97 (3), p.482-485
Main Authors: Lytkin, A. I., Chernikov, V. V., Krutova, O. N., Krutov, P. D., Romanov, R. A.
Format: Article
Language:English
Subjects:
Aqueous solutions
Chemistry
Chemistry and Materials Science
Heat of formation
Nitric acid
Phenylalanine
Physical Chemistry
Physical Chemistry of Solutions
Potassium hydroxides
Temperature effects
Thermodynamics
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Summary:The heats of interaction between alanyl-phenylalanine and solutions of nitric acid and potassium hydroxide at 288.15 and 308.15 K and solution ionic strengths of 0.5, 0.75, and 1.0 are determined via calorimetry with KNO 3 . Standard thermodynamic characteristics (Δ r H °, Δ r G °, Δ r S °, ) of the reactions of acid–base interaction in aqueous solutions of alanyl-phenylalanine. The effect temperature has on the heats of dissociation of alanyl-phenylalanine is considered along with the relationship between the thermodynamic characteristics of the dissociation of the dipeptide and the structure of this compound.
ISSN:0036-0244
1531-863X
DOI:10.1134/S0036024423030184