125 



Ratio. 



79-149 

 79.1.36 

 79-133 

 79-124 

 79.129 

 79.128 

 79.129 

 79-'3i 

 79-143 

 79.1 16 

 79.127 



79-133 

 79.127 



79->35 

 Mean, 79.132, ± .0015 



The ratios for barium now sum up as follows: 



(l.) Ag,, : BaCl2 : : 100 : 96.434, i .0015 



(2.) Ag2 : BaC1.^.2H20 : : 100 : 113. no, dz .0079 



(3.) 2AgCl : BaClj : : 100 : 72.650, ± .0014 



(4.) Per cent, of HjO in BaCl2.2H20, 14.799, =t -0018 



(5.) BaSO^ : BaNjOg : : 100 : 112.028, ± .014 



(6.) BaClj : BaSO^ : : lOO : 1 12.075, rh .0016 



(7.) Ag., : BaBr^ : : 100 : 137.745. =t -OO15 



(8.) 2 AgBr : BaBrj : : 100 : 79.132, ± .0015 



The reduction of these ratios depends upon the subjoined antecedent 

 values : 



Ag = 107. 108, =b .003 r 

 CI = 35-179, ±.0048 

 Br = 79.344, ± .0062 

 O = 15-879, ± .0003 



N = 13-935, ± -0021 

 S = 31.828, zfc .0015 

 AgCl = 142.287, ± .0037 

 AgBr= 186.452, zb.0054 



With these factors four estimates are obtainable for the molecular 

 weight of barium chloride : 



From (i) BaCl.^ =. 206.577, ± .0068 



From (2) " =r 206.542, zb .0183 



From (3) " rrr 206.745, =b .OO67 



From (4) " = 205.866, d= .0257 



General mean BaCl.^ = 206.629, =t -0045 



For barium bromide we have : 



From (7) BaBr^ =: 295.070, dz .0091 



From (8) " = 295.086, ± .0102 



General mean BaBr^ =: 295.078, ± .0068 



