Solubilities, vapor pressures, and heat capacities of the water plus lithium bromide plus lithium nitrate plus lithium iodide plus lithium chloride system

The optimum mole ratio of lithium salts in the H2O + LiBr + LiNO3 + LiI + L iCl system was experimentally determined to be LiBr : LiNO3 : LiI : LiCl = 5 : 1 : 1 : 2. The solubilities were measured at temperatures from 252.02 t o 336.75 K. Regression equations an the solubility data were obtained with a least-squares method. Average absolute deviations of the calculated value s from the experimental data were 0.15% at temperatures <285.18 K and 0.05% at temperatures greater than or equal to 285.18 K. The vapor pressures wer e measured at concentrations ranging from 50.0 to 70.0 mass % and at temper atures from 330.13 to 434.88 K. The experimental data were correlated with an Antoine-type equation, and the average absolute deviation of the calcula ted values from the experimental data was 2.25 %. The heat capacities were measured at concentrations from 50.0 to 65.0 mass % and temperatures from 2 98.15 to 328.15 K. The average absolute deviation of the values calculated by the regression equation from the experimental data was 0.24%.