50 



WORK OF CM. STINE. 



The effect of decrease in the amount of water present as solvent is plainly shown in 

 the diminishing values of M as the amount of solvent is lessened. The slight irreg- 

 ularities are probably due to unavoidable experimental error, and inaccuracy of the 

 conductivity method as a measure of dissociation. 



CALCIUM NITRATE AND CALCIUM CHLORIDE. 



Thus far all of the salts studied have a common anion. In order to extend 

 the investigation to a pair of salts having a common cation, a mixture of calcium 

 nitrate and calcium chloride was employed. The data for separate solutions of 

 these two salts have been given. The results obtained with the mixture are shown 

 in table 37. 



Table 37. Mixture of Calcium Nitrate and Calcium Chloride Data for Freezing-point and 

 Conductivity Measurements, Weight-normal Corrections, and Hydrates. 



m 



0.5Ca(NO 3 ) 2 4-0.5CaCl 2 .. . . 

 0.9 Ca(NO 3 ) 2 +0.9 CaCl 2 . . . . 

 1.3Ca(N0 3 ) 2 +1.3CaCl 2 .... 

 1.7Ca(N0 3 ) 2 +1.7CaCl>.... 

 2.1 Ca(N0 3 ) 2 +2.1 CaCl 2 .... 

 2.5Ca(N0 3 ) 2 +2.5CaCl 2 .... 

 2.9Ca(N0 2 )3+2.9CaCl 2 .... 

 3.311 Ca(N0 3 ),+3.311 CaCl 2 



Fr.-pt. 



2.50 

 4.88 

 7.67 

 11.00 

 14.78 

 19.20 

 24.2 

 30.7 



Weight-normal corrections. 



W sol 



w, 



sail 



WH:0 



Correction, 

 per cent. 



26.3336 

 27.3415 

 28.3615 

 29.3082 

 30.2933 

 31.2197 

 32.1762 

 33.0792 



1.7197 

 3.0954 

 4.4711 

 5.8469 

 7.3260 

 8.5984 

 9.9741 

 11.3878 



24.6139 

 24.2461 

 23.8904 

 23.4613 

 23.0707 

 22.6213 

 22.2021 

 21.6914 



1.5 

 3.0 

 4.4 

 6.2 

 7.7 

 9.5 

 11.2 

 13.2 



Conductivity measurements. 



m 



m c 



Yc 



D 



kc 



Vv 



a 



0.5Ca(NO 3 ) 2 .... 



0.5CaCl 2 



0.9Ca(NO 3 ) 2 .... 



0.9CaCl 2 



1.3Ca(N0 3 ) 2 .... 



1.3CaCl 2 



1.7Ca(N0 3 ) 2 .... 



1.7CaCI 2 



2.1 Ca(NOj)-..... 



2.1 CaCl 2 



2.5Ca(N0 3 ) 2 .... 



2.5CaCI 2 



2.9Ca(N0 3 ) 2 .... 



2.9CaCl 2 



3.311 Ca(N0 3 ) 2 .. 

 3.311 CaCl 2 



0.25 

 0.25 

 0.45 

 0.45 

 0.65 

 0.65 

 0.85 

 0.85 



1.05 



1.05 



1.25 



1.25 



1.45 



1.45 



1.6555 



1.6555 



4.0000 

 4.0000 

 2 2222 



2222 



5380 



5380 



1765 



1765 

 0.9523 

 0.9523 

 0.8000 

 0.8000 

 0.689661 

 0.68966/ 

 0. 60405/ 

 0.60405/ 



0.02097) 



0.02407/ 



0.032591 



0.03964/1 



0. 04263 lj 



0.05424/: 



0. 050271 ! 



0.06690/ 1 



0.05630/1 



0.07834/1 



0.060361 1 



0.08885 



0.06324 



0.09738 



0.06467 



0.00330 



0.05573 

 0.01301 

 0.02362 

 0.03538 

 0. 05044 

 0.06653 

 0.08347 

 0.09812 



/0. 01825 

 10.02122 

 J 0.02678 

 \0. 03310 

 / 0.03083 

 10.04272 

 ( 0.03169 

 10. 05011 

 / 0.02927 

 10.05483 

 (0. 02375 

 10.05893 

 10.01637 

 10.06078 

 ( 0.00865 

 10.06120 



73.0 

 84.9 

 59.5 

 73.7 

 47.4 

 65.7 

 37.3 

 59.0 

 27.9 

 52.2 

 19.0 

 47.1 

 11.3 

 41.9 

 5.2 

 37.0 



0.543 

 0.575 

 0.442 

 0.499 

 0.353 

 0.455 

 0.277 

 0.400 

 0.207 

 0.354 

 141 

 0.320 

 0.084 

 0.284 

 0.039 

 0.251 







