Soap Can Be Made by Boiling Animal Fat with Lye

question 79

Multiple Choice

Soap can be made by boiling animal fat with lye or potash for several hours.What is the major disadvantage to the lye soap made this way?

• A)It did not clean well.
• B)It often contained unreacted alkali, which was very harsh on the skin.
• C)Glycerol separated out from the soap and remained on the bottom of the kettle.
• D)It did not kill bacteria.

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