60 



THEORY OF COLLOIDAL BEHAVIOR 



m^- ,x protein in the same volume of solution is the same for a 

 given pH no matter whether the acid is strong or weak. 



4. If the numbers of cubic centimeters of 0.1 N KOH, NaOH, 

 Ca(OH) 2 , and Ba(OH) 2 are measured which must be contained 



10 



11 



FIG. 11. Curves representing the number of c.c. of 0.1 N NH 4 OH, NaOH, 

 and Ca(OH) 2 required to bring 1 gm. of isoelectric, crystalline egg albumin in 

 100 c.c. solution to different pH. The curves for NaOH and Ca(OH) 2 are 

 identical. 



in 100 c.c. of a 1 per cent solution of originally isoelectric crystalline 

 egg albumin to bring the solution to the same pH, it is found that 

 these numbers are identical and that the values for the four bases 

 lie in one curve. This means that Ca (OH) 2 and Ba (OH) 2 combine 



