The hydrolysis of soap solutions. IV. The composition of acid potassium laurates and acid sodium oleates as determined by conductivity measurements

The effect of excess lauric and oleic acids on the conductivity and on the pH of 0.2–0.02N potassium laurate and 0.1–0.01N sodium oleate systems was observed. The decrease in the specific conductivity corresponded with the formation of the acid soaps, 2KL·HL, KL·HL, 2NaOl·HOl, NaOl·HOl, and the mixed soaps 2KL·HOl and 2NaOl·HL. The mixed soaps resemble the oleates in appearance. All of these systems, even with 100 or 150 moles per cent excess acid, were slightly alkaline.