Making of soap | chemical reactions | Chemistry - YouTube
Jan 14, 2014·Soaps are formed when fatty acids react with an alkali. The reaction is called saponification. The video shows how to make soap. An alkali, sodium hydroxide, is taken in a test tube. Some vanaspati is added to the test tube and the mixture is heated. When the mixture is shaken, froth collects at the top indicating the formation of soap.