Question

Preparation of soda acid fire extinguisher with diagram and explain how it works.

Answer 1

Hint: Soda-acid fire extinguisher is made up of the acid and the sodium bicarbonate i.e. the baking soda and when these both undergoes reaction; it produces a gas which is non-supporter of combustion that extinguishes the fire. Now answer the statement.

Complete answer:
First of all, let’s discuss the fire extinguisher. Fire extinguisher is an equipment which is used to extinguish fire or control it and the spread of the fire is based on the concept of the combustion. Supporters of combustion increases the fire whereas non-supporters decreases the fire and thus, can be implied to extinguish fire.
Now, coming next to the soda acid fire extinguisher. It consists of an acid i.e. sulphuric acid and baking soda ( $NaHC{{O}_{3}}$ ).
When both of these i.e. the acid and the baking soda reacts together, carbon dioxide gas is liberated which helps to extinguish the fire because fire spreads due to the availability of oxygen in the air in excess but when carbon dioxide is liberated , its concentration in the air increases and being a non-supporter of combustion, it stops the fire from spreading and extinguishes it.
The reaction between the acid i.e, sulphuric acid and the baking soda occurs as;
$2NaHC{{O}_{3}}+{{H}_{2}}S{{O}_{4}}\to N{{a}_{2}}S{{O}_{4}}+2{{H}_{2}}O+2C{{O}_{2}}$
The diagram of soda-acid fire extinguisher is as;

Note:
By combustion, we mean the process of burning in the presence of the excess of oxygen and results in the formation of the carbon dioxide and water and spreading of fire is the process of combustion and spreading of fire increases in the presence of combustion supporters and vice-versa.