104 



THEORY OF COLLOIDAL BEHAVIOR 



We can, therefore, state that sodium acetate has the same effect 

 on the viscosity of gelatin chloride as the addition of any other 

 salt with monovalent anion, and that the anomalous effect 



ft M M M M M M M M M M 



U 8192409620481024512 256 128 64 32 16 



Concentration 



Fio. 35. vSee legend of Fig. 34, except that the pH of gelatin solution is 3.0. 



ascribed to the acetate anion in the colloidal literature is in 

 reality due to the depression of the hydrogen ion concentration 

 of the gelatin solution by the Na acetate, which is a buffer salt, 



