264' ANALYSIS OF NEUTRAL SALTS. 



Geacrallavvs. From all this I deduced the following consequences; a. 

 A metal combines with sulphur at a minimum in such a 

 proportion, that, the sulphur being acidified, and the metal 

 oxidulated, the result is a neutral sulphate of the oxidule: 

 b. A sulphate of an oxidule contains half as much oxi- 

 gen as there is sulphur in the sulphuric acid, with which it 

 is saturated. 

 Composition From repeated experiments I have found, that sulphuric 



acid and sui- '^^'^ ^^ Composed of 40 parts sulphur, and 60 oxigen, almost 

 phatss. precisely; and that 100 parts of sulphuric acid saturate a 



quantity of base Containing <20 parts of oxi^en. The fol- 

 lowing is an incontestible proof of th£ truth of this opinion, 

 iwhich I was on the point of giving up. On comparing the 

 result of my experiments with that of the experiments of 

 Mr. Bucholz, who had found 42 parts of sulphur and 6S of 

 oxigen in sulphuric acid, I discovered, that his analysis of 

 Sulphate of sulphate of barytes was inaccurate. According to him this 

 barytes. g^j^ -^ composed of 3'2'5 acid and j57'5 base: i find it to 



consist of 34 acid and 66 base*. Tlie inaccuracy of the 

 analysis of the sulphate occasioned an inaccuracy in the ana- 

 lysis of the muriate of barytes, and in that of the muriate 

 of silver. I endeavoured to co/rect these defects by expe-? 

 Muriate of sil- riments as accurate as possible, and found the muriate of 

 ' ' silver to be composed pf 18*7 rnuriatic acid, and 81*3 oxide 



of silver. On applying these corrections to my former ana- 

 lyses I perceived the harmony, that I had hitherto missed. 

 Every thing then confirmed tne in the opinion, that the dif- 

 ferent bases, which saturate the same quantity of jmy acid, 

 contain the same qnautity of oxigen. 

 5^\]lph.'.rcus On oxidating sulphite of barytes by means of nitric acid I 



a^id. obtained neutral sulphate of barytes, without any superflu- 



ous sulphuric acid, or nitrate of barytes, being forrned. 

 The increase of weight of vhe sulphite taught me, that sul- 

 phurous acid consists of almost exactly equal part's of sul- 

 phur and oxigen; er, that 100 parts of sulphur combine 

 with near 100 parts of oxigen to form sulphurous acid, and 

 with about 150 to form sulphuric acid. From these expe- 



f For -. alyses of the sulphate of baiyies by Mr. James Thomsoii and 

 Mr peviliiei, eee Journal, vol. XXllI, p. 174, aad 280. 



rimen^s 



