Question

mention the essential material to prepare soap in the laboratory. describe in brief the test of determining the nature (acidic,alkaline) of the reaction

Answer 1

Soap is prepared by heating animal fat or vegetable oil with concentrated sodium hydroxide .

                               Heat

Fat or oil + NaOH ----------> Soap +Glycerol.

The process of making soap by the hydrolysis of fats and oils with alkalis is called Saponification.

Raw Materials Required For preparation of soap in Laboratory :

--> Vegetable oil

---> Sodium Hydroxide

---> Commom salt

---> Beaker

---> Bunsen Burner.

TEST: saops are mostly basic in nature and we can do litmus test red litmus will turn to blue.

Answer 2

Chemicals required: Vegetable oil, common salt and 20% sodium hydroxide
solution
When a red litmus paper is dipped in the reaction mixture, the paper changes its
colour to blue. Hence, the reaction mixture of the saponification reaction is basic in nature.

i hope its hlp you