J. Fisher et al., ENTHALPIES OF SOLUTION AND CRYSTALLIZATION OF AMMONIUM ALUMINUM SULFATE DODECAHYDRATE IN WATER AT 25-DEGREES-C, Journal of solution chemistry, 24(7), 1995, pp. 659-669
Enthalpies of crystallization of NH4Al(SO4)(2) . 12H(2)O from aqueous
solutions at 25 degrees C, measured using a calorimetric method and de
termined from previously published data on the concentration dependenc
e of the enthalpy of solution, are reported. The results are compared
with the values obtained from the temperature dependence of solubility
and from vapor pressure data by using the Williamson equation. The in
tegral and partial molar enthalpies of solution in concentrated and di
luted solutions are given.