1908-9.] Hydrolysis of Salts of Amphoteric Electrolytes. 667 
case of a non-amphoteric substance. This may be accounted for by some 
kind of association of molecules or ions. A molecule of free base may 
associate with the positive ion of the salt to form a complete ion — 
HR, OH + H R 1 = HR i + H o 0. 
From the normal depression of the freezing-point, we see that in 
solutions of anthranilic acid itself there is no such association, hut it is 
quite possible that the ion may have a more strongly associative tendency 
than the complete molecule. For, in the formation of the ion HR 1 from a 
molecule of base R or HROH, a hydroxyl group is taken away, leaving a 
still possible hydrogen ion. This makes the ion HR of an acidic nature, 
and it would naturally tend to form an internal salt with a fresh basic 
molecule. 
(Issued separately October 14 , 1909 .) 
