Abstract
The solubility of d,l-phenylalanine in aqueous sodium chloride and d,l-serine in aqueous sodium nitrate at 5 K intervals from 288.15 to 308.15 K are reported in the present study. The standard Gibbs energies (\( \Delta G_{\text{t}}^{0} (i) \)) and entropies (\( \Delta S_{\text{t}}^{0} (i) \)) of transfer were evaluated at 298.15 K from the solubility of these amino acids. The solubilities were measured by an ‘analytical formol titrimetry’ method. The chemical parts of the Gibbs energies (\( \Delta G_{\text{t,ch}}^{0} (i) \)) and entropies (\( T\Delta S_{\text{t,ch}}^{0} (i) \)) of transfer of the amino acids were calculated by subtracting the cavity effects and dipole–dipole interaction effects from the total standard transfer energies. The characteristics of the solubility and solvation thermodynamics of amino acids in such aqueous electrolytes solvent systems were studied and discussed in the light of hydrogen bonding, and hydrophilic and hydrophobic interactions.
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The authors are very much thankful to the Department of Chemistry, Visva-Bharati University, and Shibpur Dinobundhoo Institution (College) for providing financial assistance and computational facilities.
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Mondal, S., Roy, S., Ghosh, S. et al. Study of the Solubility and Transfer Thermodynamics of d,l-Phenylalanine in Aqueous Sodium Chloride and d,l-Serine in Aqueous Sodium Nitrate Solutions. J Solution Chem 45, 1755–1772 (2016). https://doi.org/10.1007/s10953-016-0527-1
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DOI: https://doi.org/10.1007/s10953-016-0527-1