THERMODYNAMICS OF IONIC SOLVATION IN N-PROPANOL FROM -50 TO 50-DEGREES C

Enthalpies of the solution of 1-1 electrolytes (LiBr, LiI, NaI, NaBPh4 , R4NBr (R = Me, Et, Pr, Bu, Am), Et4NCl, Bu4NI, Ph4PBr) in n-propanol were determined experimentally from -50 to 50-degrees-C. Standard ent halpies of solution of the electrolytes studied were determined on the basis of the extrapolation equation of Debye-Hueckel theory and takin g ionic association into account. The reference salt Ph4PBPh4 was used to obtain the ionic solvation properties. Partial molar heat capaciti es of ions in propanol were calculated and compared to our previously reported data for ethanol. The changes in the ionic heat capacities wi th temperature are discussed.