Abstract
The heat capacities per unit volume and the densities of aqueous solutions of 2-propanol, neopentanol, tert-amylalcohol, 2-amino-2-methylpropanol, triethylamine and diethylmethylamine were measured, in many cases as a function of temperature, over the whole mole fraction or solubility range. Apparent and partial molal heat capacities, volumes and expansibilities were derived. The concentration dependence of these functions suggest the existence of transitions in some of these systems, in the water-rich region, qualitatively similar to micellization. The large relaxation contribution observed with some of the thermodynamic functions of hydrophobic alcohols and amines suggests a reinforcement of hydrophobic hydration due to strong hydrogen-bonding interactions of the polar groups with water.
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Roux, G., Roberts, D., Perron, G. et al. Microheterogeneity in aqueous-organic solutions: Heat capacities, volumes and expansibilities of some alcohols, aminoalcohol and tertiary amines in water. J Solution Chem 9, 629–647 (1980). https://doi.org/10.1007/BF00645894
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DOI: https://doi.org/10.1007/BF00645894