Equilibrium in Salt- Solutions. 

 Table II. 



155 



Salts. 



t°. 



Mol. vol. 



AorB. 



V. 



A. 



(NH 4 ) 2 S0 4 .. 

 K 9 Cr0 4 





 20 

 20 



1857-23 

 1844-56 



j 3701-79 



3697-16 



-4-63 



(NH 4 ) 2 S0 4 ... 

 K 9 Cr0 4 



40 

 40 



1858-32 

 • 1846-55 



1 3704-87 



3700-74 



-4-13 



(NH 4 ) 2 Cr0 4 . 

 K 2 S0 4 



20 

 20 



1863-28 

 1840-26 



1 3703-54 



3702-75 



- -89 



(NH 4 ) 2 O0 4 . 



k 2 so; 



40 



40 



1864-70 

 1842-31 



1 3707-01 



3705-91 



-MO 



2NH 4 N0 3 ... 

 K 2 S0 4 



20 

 20 



1895-83 

 1840-41 



1 3736-24 



3734-87 



-1-37 



2NH 4 N0 3 ... 

 K,S0 4 



40 

 40 



1898-55 

 1842-36 



1 3740-91 



3739-42 



-1-49 



(NH 4 ) 2 S0 4 ... 

 2KN0 3 



20 

 20 



1857-23 



1879-86 



13737-09 



3736-41 



- -68 



(NH 4 ) 2 S0 4 ... 

 2KN0 3 



40 

 40 



1858-38 

 1883-22 



j 3741-60 



3740-86 



_ -74 



Considering the solutions in Tables I. and IL ? we find that 

 in every case the former of the two couples of salts is decom- 

 posed more or less completely into the second. 



Completely in the case of: — 



5NaN0 3 + 5KCl, 

 2NH 4 Cl + 2NaN0 3 , 



2NH 4 C1 + 2KN0 3 , 

 (NH 4 ) 2 S0 4 + K 2 Cr0 4 , 

 2NH 4 ]Sr03 + K 2 S0 4 . 

 Incompletely, however, in the case of the strong solutions: — 



5NH 4 Cl + 5NaN0 3 , 



5NH 4 C1 + 5KN0 3 . 



The decomposition is, however, complete on dilution, as shown 

 above. 



I may here add a few words on the well-known experiments 

 of Malaguti*, who attempted to solve the question of the 

 arrangement of salts in solution by adding alcohol to the solu- 

 tion of two salts and then determining the nature and quantity 

 of the salt precipitated. For instance : — " When one equiva- 



* Ann. de Chim. et de Thys. 1853 [5] xxxvii. p. 208. 



