OBSERVATIONS ON MURIATIC ACID. }7^ 



2,5 per cent. I increafed the heat to rednefs, in a furnace. 0,025. Red 



The fait boiled with a violent effervefcence, and rapid dif- h ^ at c ** kd ; 



. efcape of gas and 



engagement of gafeous fluid, together with a thin white i f so fo,5. 



vapour, and then funk fuddenly into a white fpongy mafs. 

 The lofs of weight ufually varied from 42 to 4S or 50 per 

 cent. 



I put 100 grains into a coated glafs retort, luted to a fmall Diftillation of 

 and perfectly dry receiver, having a tube communicating with f p tafh, 

 a glafs bell in the pneumatic tub. The fire had not been 

 lighted very long, when a flight dew began to line the infide 

 of the receiver; and, as foon as the retort was nearly red-hot, afforded oxigen $ 

 a difengagement of gas, fo fudden as almoft to be explofive, 

 took place. A quantity of thin white vapour arofe, which af- 

 terwards was depofited, in the form of a white fublimate, in 

 the receiver and the tube. When the extrication of gas had 

 ceafed, the apparatus was allowed to cool. The gas, with the 

 ufual corrections of temperature and preffure, meafured 1 12,5 

 cubic inches, =38,3 grains. The 2,5 mentioned above, as and left mur&e. 

 the lofs of this fait at a low heat, were water. 53,5 remained 

 in the retort ; and the white fublimate in the tube and receiver 

 amounted to 5. 

 The products of this operation were therefore, 



Water - - - - 2,5 ■ « 



Oxigen - - 38,3 



Salt in the tube and receiver • 5 



Salt remaining in the retort • 53,5 



99,3. 

 To find the proportions of oxigen and muriatic acid, in hy- 

 peroxigenized muriatic acid, it now only remains to determine 

 the fum of the quantities of muriatic acid, contained in the The refidual 

 53,5 of the retort, and the 5 of the tube and receiver. The 1 ™" 3 * 5 wasem- 

 53,5 gave, by nitrate of filver, a precipitate correfponding to p ; ta!:e nitrate"? 

 18,21 ; and the 5, a precipitate correfponding to 1,76; in all, fi,v er, and its 

 20 of the muriatic acid. Therefore, 38,3 of oxigen, and 20 of ^^l^^' 

 muriatic acid, combine to form 58,3 of hyperoxigenized mu- from the preci- 

 riatic acid ; or, 100 of hyperoxigenized muriatic acid contain, P ltate * 

 within a fraction, - 



Oxigen - - - -65 



Muriatic acid ... 3.5 



100. 



And 



