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L. A. Kochergina V. P. Vasil’ev D. V. Krutov O. N. Krutova 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2007,81(2):182-186
The heat effects of interaction of a solution of citric acid with HNO3 and KOH were measured calorimetrically at 298.15 K and ionic strengths of 0.5, 1.0, and 1.5 (KNO3). The heat effects of acid dissociation were calculated using the universal HEAT program. The standard thermodynamic characteristics of step dissociation of citric acid were determined. 相似文献
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Konstantinova E. P. Nikolaev P. V. Krutova E. D. Ptitsyn D. A. Kapustin I. A. 《Russian Journal of General Chemistry》2022,92(9):1852-1857
Russian Journal of General Chemistry - A phosphate flame-retardant hardener (PFH) produced on the basis of industrial orthophosphoric acid and acetic anhydride was proposed for reducing the... 相似文献
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Thermodynamic characteristics of stepwise dissociation of glycyl-glycyl-glycine in aqueous solutions
A. I. Lytkin V. V. Chernikov O. N. Krutova G. G. Gorboletova I. A. Skvortsov A. S. Korchagina 《Russian Journal of Inorganic Chemistry》2017,62(2):240-243
The heats of interaction between glycyl-glycyl-glycine and solutions of nitric acid and potassium hydroxide are determined by calorimetry at 298.15 K and ionic strengths of 0.25, 0.50, and 0.75 in the presence of KNO3. The standard thermodynamic characteristics (Δr H°, Δr G°, and Δr S°) of acid–base interaction in aqueous solutions of the peptide are calculated. The effect of background electrolyte concentration on the enthalpy of dissociation of glycyl-glycyl-glycine is discussed. 相似文献
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A. I. Lytkin V. V. Chernikov O. N. Krutova I. A. Skvortsov 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2017,91(6):1021-1025
Enthalpies of complex formation for glycine (HL±) with Ce3+ and Er3+ ions at 298.15 K and the value of the ionic strength of 0.5 (KNO3) are determined by calorimetric means using two independent procedures. Thermodynamic characteristics of the reactions of formation for complexes of glycine with Ce3+ and Er3+ ions at various [metal]: [ligand] molar ratios are calculated. 相似文献
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Lytkin A. I. Chernikov V. V. Krutova O. N. Volkov A. V. Krutova E. D. 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2018,92(12):2485-2487
Russian Journal of Physical Chemistry A - The enthalpies of dissolution of crystalline nitrilotrimethylphosphonic acid С3Н12NO9Р3 (NTPA) in water at 298.15 K are determined... 相似文献
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L. A. Kochergina V. P. Vasil’ev O. N. Krutova 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2008,82(3):348-354
The heats of interaction of D,L-α-alanyl-D,L-valine, β-alanyl-β-alanine, and α-alanyl-β-alanine with solutions of nitric acid and potassium hydroxide were determined calorimetrically at 288.15, 298.15, and 308.15 K and solution ion strengths of 0.5, 1.0, and 1.5 in the presence of KNO3 and LiNO3. The heat effects of step dissociation of the dipeptides were calculated using the RRSU universal program. The standard thermodynamic characteristics (Δr H o, Δr G o, Δr S o, and ΔC p o) of proton interaction with the ligands specified were determined. The data obtained were analyzed in terms of Herny concepts. The thermodynamic characteristics of ionization correlated with the structural features of the dipeptides. 相似文献
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A. I. Lytkin V. V. Chernikov O. N. Krutova 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2016,90(8):1530-1532
Heats of solution of crystalline α-aminobutyric acid in water and in aqueous solutions of potassium hydroxide at 298.15 K are measured by means of direct calorimetry. Standard enthalpies of formation of the amino acid and products of its dissociation in an aqueous solution are calculated. 相似文献
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L. A. Kochergina A. V. Emel’yanov O. N. Krutova G. G. Gorboletova 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2007,81(10):1632-1638
The heats of interaction of L-phenylalanine with solutions of nitric acid and potassium and lithium hydroxides were determined calorimetrically at 288.15, 298.15, and 308.15 K and solution ionic strengths of 0.5, 0.75, and 1.0 in the presence of LiNO3 and KNO3. The standard thermodynamic characteristics (Δr H°, Δr G°, Δr S°, and ΔC p ° of acid-base interactions in aqueous solutions of L-phenylalanine were calculated. The influence of the concentration of background electrolytes and temperature on the heats of dissociation of L-phenylalanine was considered. A comparative analysis of the standard thermodynamic characteristics of step dissociation of L-phenylalanine and alanine was performed in terms of the modern concepts of the structure and physicochemical properties of these compounds and their solutions. 相似文献
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Lytkin A. I. Chernikov V. V. Krutova O. N. Smirnova D. K. Krutova E. D. 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2020,94(1):77-80
Russian Journal of Physical Chemistry A - The standard enthalpies of combustion and formation of crystalline glycyl-L-leucine are calculated. The heats of dissolution of crystalline... 相似文献