This paper focuses on the accurate thermodynamic study of solution of L-valine in water in a wide temperature range. Enthalpies of solution of L-valine in water have been calorimetrically determined between T = 279 K and T = 323 K. Standard enthalpies and heat capacities of solution as well as standard partial molal heat capacities have been calculated and compared with available literature values. The free energy of solution and its enthalpic and entropic terms have been computed using the combination of solubility and calorimetric data via the Gibbs Helmholtz equation from T = 280 K to T = 360 K. The temperature dependence of solubility of the amino acid has been also computed and compared with experimental quantities. The satisfactory agreement is found between experimental and predicted solubility values.
