Question

Which base is used in manufacture of soap?
A.$Ca{(OH)_2}$
B.$NaOH$
C.$N{H_3}$
D.$N{H_4}OH$

Answer 1

Hint: It is used to manufacture many products and soap is one of them. It is very corrosive (harsh). It is either used as a 50% solution or solid. It is colorless and has no odor (smell). It is a very strong chemical and absorbs moisture until it dissolves.

Step by step answer: This base is also known as caustic soda or lye. Saponification is the term used for the manufacturing of soap. Soap when dissolved in water, has the ability to remove dirt from surfaces such as the human body. A simple process of cleaning any solid surface. It is a mixture of sodium salts (caustic soda) and animal fat or plant oil.

Alkali and fat are the major requirement for making soap.
Most commonly Alkali used is Sodium Hydroxide ($NaOH$). To cover the odor of dirt, perfume and fragrances are used.

A solution is created by mixing of$NaOH$ fragments with liquid, and when fats and oils are mixed with this solution, a chemical reaction occurs called saponification.

Thus, the correct option is B. i.e., $NaOH$.

$NaOH$is used as base in the manufacture of soap.

Additional Information: Sodium Hydroxide ($NaOH$) consists of sodium cations ($N{a^ + }$) and hydroxide anions ($O{H^ - }$). It is used to manufacture many products such as: Soaps, Rayons, oven cleaners, Papers, aluminium, explosives and also used in bleaching, laundering, electrolytic extraction etc.
It reacts strongly with water and acids. Its concentrated vapors can cause damage of eyes

Note: Around 2500 BC, the ancient Babylonian were the ones who first invented soap by mixing of water, cassia oil and alkali. They mastered the art of making soap. This formula was written on a Babylonian clay tablet.