Thermochemical studies of sodium phenylalaninate solvation parameters in water-ethanol solutions |
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| Authors: | V. N. Vandyshev S. F. Ledenkov |
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| Affiliation: | 1. Krestov Institute of Solution Chemistry, Russian Academy of Sciences, ul. Akademicheskaya 1, Ivanovo, 153045, Russia
2. Ivanovo State University of Chemistry and Technology, pr. Fridrikha Engel’sa 7, Ivanovo, 153000, Russia
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| Abstract: | The heats of mixing of aqueous solutions of sodium L-phenylalaninate (NaPhe) with water-ethanol solvents were calorimetrically measured at 298.15 K. The standard enthalpies of transfer of a stoichiometric mixture of ions [Na++Phe?] and anion Phe?, as well as the contributions characterizing the universal and charge components of the solvation energy of individual ions in binary solvents, were calculated. The resulting enthalpy parameters are compared with those of the earlier studied similar system containing β-alanine. |
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