Abstract
(1) The production of acidity in stearic acid sole by neutral salts has been investigated by means of the quinhydrone electrode.
(2) The variation in the degree of ionic interchange with variation in (1) concentration of sol, (2) concentration of salt, (3) acidity, and (4) nature of salt has been studied.
(3) The influence of electrolytes upon the stability of the sol has been examined, and the conclusion reached that there is a close connection between the coagulative ability of a salt and the tendency for it to liberate hydrogen ions.
(4) The results have been discussed with reference to the general theory of coagulation.
