Ill 



1.6 times as much salt as base is present, according to 

 equivalents. A solution of 0,0008 n salt (addition of 0,04 

 cc. of 0.02 n salt solution) seems to diminish the action 

 of alkali to the extent of about 20 percent, (viz. the 

 action of alkali is decreased to 80% of its former 

 strength). 0,004 n salt (0,04 cc. of 0,1 n sol.) decreases 

 the action by about 40% and 0,02 n (0,4 cc. of 0,5 n 

 salt solution by about 60 % all of 0,0003 n base. 



The action of salt increases not by any means pro- 

 portionally to the amount added, but much less rapidly, 

 corresponding to about the cube root of it. The action 

 is very similar to the decrease of the degree of disso- 

 ciation of salts, which takes place with the further 

 addition of salts that is by increased concentration; but 

 it is much greater. It is about what we should expect, 

 according to the rule of Ostwald, would be the case 

 for the degree of dissociation of the salts of very poly- 

 valent acids. 



Still stronger is the action of salts of ammonia upon 

 ammonia, as the following figures show. 



The action of sulphate and chloride, in equivalent 



39 



