BARIUM. 125 



AgBr. Ratio. 



2.28760 2.89026 79-149 



3-47120 4.3*635 79.136 



3.81086 4.81688 79.133 



2.35971 2.98230 79-124 



2.94207 3-71809 79-129 



2.10633 2.66191 79.128 



2.91682 3.68615 79.129 



2.37290 2.99868 79.131 



1.84822 2.33530 79.143 



1.90460 2.40733 79.116 



5.66647 7.16120 79.127 



3.52670 4.45670 79-133 



2.87743 3-63644 79-127 



3.46347 4-37669 79.135 



Mean, 79.132, .0015 

 The ratios for barium now sum up as follows: 



(I.) Ag 2 : BaC) 2 : : 100 : 96.434, .0015 



(2.) Ag 2 : BaCl 2 .2H 2 O : : 100 : 113.110, .0079 



(3.) 2AgCl : BaG 2 : : 100 : 72.650, =fc .0014 



(4.) Per cent, of H 2 O in BaCl 2 .2H 2 O, 14.799, =b .0018 



(5.) BaSO 4 : BaN 2 O 6 : : 100 : 112.028, .014 



(6.) BaCl 2 : BaSO 4 : : 100 : 112.075, =h .0016 



(7.) Ag 2 : BaBr 2 : : 100 : 137-745, .0015 



(8.) 2AgBr : BaBr 2 : : 100 : 79.132, .0015 



The reduction of these ratios depends upon the subjoined antecedent 

 values : 



Ag= 107.108, .0031 N = 13.935, =b .0021 



Cl = 35.179,^.0048 S == 31.828, .0015 



Br = 79.344, .0062 AgCl = 142.287, dz .0037 



O = 15.879, .0003 AgBr = 186.452, .0054 



With these factors four estimates are obtainable for the molecular 

 weight of barium chloride : 



From (i) BaCl 2 = 206.577, .0068 



From (2) " = 206.542, .0183 



From (3) " 206.745, .0067 



From (4) " = 205.866, .0257 



General mean BaCl 2 = 206.629, .0045 



For barium bromide we have : 



From (7) BaBr 2 295.070, .0091 



From (8) " =295.086,^.0102 



General mean BaBr 2 = 295.078, .0068 



