384 



MURIATES GF BARTTES AND SILVER. 



Its component 

 parts, when 

 calcined * 



■when crystal* 

 lized. 



9-60 gr. of caustic barytes. Calcined muriate of- barytc; 

 therefore is composed of 



barytes 0-753 muriatic acid 0-247 



I formed anew some muriate of barytes from its com- 

 ponent principles, and crystallized it. 10 gr. lost 1*5 gr. 

 by calcination, Consequently the crystallized salt contains 

 baryte* - - - - 0-64 



muriatic acid * - • - 0*21 



water - * - - 0*15 



Muriate o£ 

 silver. 



Proust's pro- 

 portions 



for oxide of 



silver, 



1-00 

 Five gr. of artificial muriate of barytes calcined, con- 

 taining 1*235 gr. of acid, were precipitated by nitrate of 

 silver; and the result was 6-75 gr. of muriate of silver. This 

 salt therefore contained 



muriatic acid 0*183, and as it contained 



silver - - 0-750, there remain 



0-067, which must represent the oxigen. 



1-000 

 Mr. Proust has found, that 100 parts of silver always 

 produce 133 of muriate; and on precipitating a salt of 

 silver by lime-wafer, he found, that the precipitate was 

 composed of 0*905 silver, 0*01 lime, and 0*085 oxigen. 

 Hence he concluded, that the oxide of silver contained 



0-909 



silver 

 oxigen 



and muriate of an( j the muriate of silver, 

 siher - silver 



acid 



oxigen 



0*091 

 1-000 



0*751 

 0-180 

 0*069 



1-000 

 Sulphate of Itisdifficultinchemistryto obtain results agreeing more nicely, 

 fca-rytes. g.5 g r# f calcined muriate of barytes, which I had pre- 



pared, were precipitated by sulphate of soda, and pro- 

 duced 9*55 gr. of sulphate of barytes, a quantity differ- 

 ing very little from what I had before found ; and whence it 

 followed, that the sulphate contained 0*345 of acid*. The 

 proportions of the muriate, which I have just ascertained, 

 prove, that the sulphate of barytes cannot contain more 

 than 0-33 of acid. 



* This was the largest proportion shown by Mr.Berthier's analyses. C 



