HEATS OF SOLUTION OF CRYSTALLINE OPTICALLY ACTIVE AND RACEMIC AMINOACIDS IN WATER

The heats of solution of aminoacids crystals at 298.15 K have been measured. The difference between the heat of solution of optically active compounds and that of corresponding racemic compounds was appreciably large compared with the heat of mixing of concentrated aqueous solutions of D- and L-optical isomers, and the values were several kJ/mol at most.