Proportion of Acids in Salts, iff, ' zj^ 



Prob. 8. To find how much of an acid liquor oTonefort will hold as much real acid &s is 

 held by a given weight of an acid liquor of another forty whofe fp. grav. is alfo given: — for 

 inftance, how much vitriolic acid will contain the fame quantity of real acid as is contained iii 

 100 grains nitric acid, whofe fp. grav. is 1,3925. 



I ft. P'irft find by the table the quantity of real acid contained in the given quantity of the 

 fecond acid, whofe fp. grav. is given, or if not in the table it muft be found by problem ift.. 

 2d. It is apparent that the quantity of the firft acid liquor muft vary with its fp. gr. thus, 

 in the inftance given, as loo parts nitrous acid of the fp. grav. 1,392 contains 50 parts 

 real nitrous acid, fo 100 parts vitriolic acid, whofe fp. grav. is 1,5202 contains by the 

 table the fame quantity of real acid, v. z. 50 parts, but of the vitriolic acid, whofe fp. grav. 

 is 1,800, only 64 parts are recjuifite to contain 50 parts of real acid, whereas 200 grains are 

 requifite of the vitriolic acid, whofe fp. grav. is 1,2320. 



Note. The folution of this problem may hereafter be found of ufe in comparing the quan- 

 tities and affinities of oxygen in different acids. 



Prob. 9. To find the fp. grav. of fuch vitriolic acid as that loo parts of it fliall contain 

 the fame quantity of real acid as 100 parts of the nitrous. 



This can be found only by infpeSiion on confulting the tables; an example has been ken in 

 the laft problem; fo alfo 100 parts vitriolic acid 1,3 102 contain the fame quantity of real acid 

 as 100 parts of nitrous acid, whofe fp. grav. is 1,2687. And 100 grains vitriolic acid, whole 

 jp. grav. is 1,1746, contains the fame quantity of real acid as 100 grains fp. fait, whofe fp. 

 grav. is 1,159. 



And 100 grains nitrous acid 1,1963 contains the fame quantity of real acid as 100 grains 

 fpirit of fait whofe fp. grav. is 1,187. 



Hence it ftiould fcem that the fp. grav. of the real marine acid is fmaller than that of the 

 real nitrous, and that of the real nitrous fmaller than that of the real vitriolic, fince when the 

 weight of each acid, and alfo the weight of real acid in each is equal, the vitriolic acid is fpe- 

 cifically heavier than the nitrous, and the nitrous than the marine ; but this, perhaps, may 

 arife from penetration. 



Prob. 10. To find how much of a neutral fait of one fort holds as much real acid or 

 bafis as a given weight of the fame neutral fait in another ftate, or as a given weight of 

 another fait in any given ftate. 



Thefe-c|ueftions are refolved by the 4th and 5th tables. Thus, if it be afked how much nitre 

 contains as much acid as 20 grains of vitriolated tartarin ? By the 4th table I fee that 

 221,48 parts of vitriolated tartarin and 227,22 parts nitre contain equal quantities of acid 

 fince both contain 100 parts, then as 221,48 . 227,22 : : 20 . 20,5. 



Again, How much deficcated feda will hold as much alkali as 30 parts cryftallized foda? 

 In the 5th table I fee that 541,1 parts of the cryftallized hold as much alkali as 227,4 parts of 

 the deficcated, then as 541,1 : 227,4 :: 30 : 12,6. 

 Prob. i i. How much of a given bafis will be requifite to faturate the acid contained in a 



given 



