AKJLLYSIS OF NEUTRAL SALTS. QQ^ 



rimenta I conclude, that sulphurous acid presupposes in the 

 bases with which it is saturated the same quantit}' ofo>:igen 

 as sulphuric acid. It appears to me probable also, that the ^ 

 metal and sulphur always remain in the sanse proportion to 

 each other in the sulphuret, sulphuretted oxide, sulphite of 

 the oxidule, sulphate of the oxidule, and combination witti 

 sulphuretted hidrogen. But I have proved, that the pro- 

 portion between the metal and sulphur is altered in the sul- 

 phates of the oxides, when the oxigen in the oxide is equal 

 to that of the oxidide multiplied by 1*5. 



By the analysis of the muriate of lead 1 found, that the Examination 

 base, which saturates 100 parts of muriatic acid, contains" ' 



30*49 parts of oxigen : and on calculating from this result 

 the composition of the oxldnle and oxide of copper, of the 

 oxides of silver and lead, and of potash, soda, and lime, I 

 always obtained results agreeing sufficiently with those of 

 the direct experiments. The sulphates of iron, copper, lead, ^^^ of sul- 

 lime, potash, and soda, giving also, both by calculiition and phates, 

 experiment, results corresponding with each other and with 

 those of the muriates, I have imagined, that this point may cmfirms the 

 be considered as completely settled. It is to be understood, ^" °'^ ^* 

 that all these different analyses could not be carried to such 

 perfection, as to give results not varying in the thousandths, 

 and sometimes even in the hundredth parts; but these cir- 

 cumstances are to be ascribed rather to the difficuliy of ex- 

 ecuting analyses with perfect accuracy, than to au erroneous 

 principle. 



The oximuriatic acid "combines with metals, and forms Oximuriatic 

 neutral salts, in which neither the acid nor oxide predomi- 

 nates. Hence 100 parts of nvuriatic acid are combined 

 with the same quantity of oxigen in the oximuriatic acid as 

 in the muriatic salts, that is to say, with 30*49 parts. In the 

 experiments of Mr. Davy, potassium exposedi to common Muriatic acid 

 muriatic acid gas was condensed, forming a neutral salt, and ^** 

 evolving hidrogen gas. It is evident therefore, that 100 

 parts of muriatic acid are combined with a quantity of oombinMwii!. 

 water, that contains 30.49 of oxigen; that is, with 34 5 of ^'^'^' 

 water. Concentrated sulphuric acid coniains, accodiug to Sniphuric 

 accurate exTieriuients, almost a fii'th part of water: thai is ^^^'^ 

 to &ay, 100 parts of this acid are combined with 2-2*6 of 



water, 



