14 



THE ROYAL SOCIETY OF CANADA 



indicated. As in the previous table, the values represent the amounts 

 of salt, in grams, dissolved by 100 grams of water. 



Table III. 



Halberstadt^ found that 100 parts of a solution of the salt in 

 water at 20° contained 0-59 parts of dry salt a value somewhat lower 

 than we have obtained. It will be noted that the bromoplatinate is 

 at the lower temperatures approximately 30% more soluble than the 

 chloroplatinate; at 100° about 60% more soluble. 



The Solubility in Water of Ammonium Chloriridate. 



In Table IV are to be found the results obtained for the solubility 

 of the ammonium chloriridate in. water at eight different temperatures. 

 The values have the same significance as those of the previous tables. 



TABLE IV. 



The unstable character of the salt prevented us making any 

 measurements at higher temperatures. Even at 80° there was some 

 evidence of decomposition. 



These values show that the salt is about eight times as solubfe at 

 80° as at 0°, while the chloriridate is approximately twice as soluble in 

 water as the chloroplatinate. Our results are higher than those 

 obtained by Rinbach and Korten.^ 



1 Ber. der deutschen Chem. Gesell., 17, 296 (1884). 



2 Zeit. anorg. Chem., 52, 406 (1907). 



