. Carnegie Institution of Washington publication. 20 WORK OF C. Al. STLNL. By means of the preceding formula the value of X has been calculated for various concentrations used in the mixture of calcium chloride and potassium chloride, and the results are given in table 7. The significance of the symbols has already been given. CALCIUM CHLORIDE. Table 7.—Hydration of Calcium Chloride in the Mixture. m Mc a L I X A/m L' M H CaClj+ KC1 ' CaCU+ KC1 CaCU+ KC1
. Carnegie Institution of Washington publication. 20 WORK OF C. Al. STLNL. By means of the preceding formula the value of X has been calculated for various concentrations used in the mixture of calcium chloride and potassium chloride, and the results are given in table 7. The significance of the symbols has already been given. CALCIUM CHLORIDE. Table 7.—Hydration of Calcium Chloride in the Mixture. m Mc a L I X A/m L' M H CaClj+ KC1 ' CaCU+ KC1 CaCU+ KC1 + KC1 : + ! CaCl2+ + | T3 V c S 501 I u tn | 30 u — o s CSJ u u 20- In order to compare the hydrates formed by calcium chloride in separate solution with those which it forms in the mixture with potassium chloride, the values of M are plotted against the concentrations as abscissas in fig. 1. It is seen that while the value of M increases with increase in concentra- tion, in general, in the mixture as in separate solution, M is less in the mix- ture than in separate solution of cal- cium chloride. This is just what we should expect, since there is less water present as solvent in the mixture of calcium chloride and potassium chlo- ride, at any given concentration of the calcium chloride, than there is at the same concentration of the single solution of calcium chloride. It is evi- dent, from previous work, that while the total ?iumber of gram-molecules of water combined increases, in general, with increase in concentration, the molecular hydration decreases with in- crease in concentration. That is, the amount of water with which a molecule of the calcium chloride or the resulting i
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