“…(5)(6)(7)(15)(16)(17)(18) The chloride and the bromide systems with the same cations (Li + and Ca 2+ ) have been simulated simultaneously with a view to preserving a constant value of the θ(Li,Ca) parameter. (5,(17)(18)(19) In calculating the ternary parameters we have included the unsymmetrical mixing terms E θ and E θ , according to reference 14. In our previous studies on chloride and bromide systems (5,6,15,(24)(25)(26)(27) containing the same cations (M + and Me 2+ ), and where double salts with the same stoichiometric composition crystallize, the following relationships have been found: the absolute value of the sum of the ternary parameters for the bromide systems is larger than that for the corresponding chloride system, and the r G o m values for the chloride double salts are lower than those for the corresponding bromide double salts.…”