Abstract
Solvent effects are discussed in terms of the free energies of transfer ΔGt 0 from water to aqueous 2-methoxyethanol (MCS) solvents, of the uncharged base (B) evaluated from the measured solubilities, of HCl evaluated earlier, and of Tris hydrochloride (B.HCl). The characteristic minimum at 25°C is attributed to selective solvation of the individual species involved in the equilibrium process. The results indicate that the primary solvation either of H+ or BH+ ions arising from specific ion-dipole interactions outweigh the electrostatic or the secondary solvation effect.
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El-Harakany, A.A., Barakat, A.O. Solubility of Tris-(hydroxymethyl)-aminomethane in water-2-methoxyethanol solvent mixtures and the solvent effect on the dissociation of the protonated base. J Solution Chem 14, 263–269 (1985). https://doi.org/10.1007/BF00644458
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DOI: https://doi.org/10.1007/BF00644458