Question

Illustrate how is sodium bicarbonate used
in a fire extinguisher. 5 marks
​

Answer 1

Explanation:

When the fire extinguisher is operated by pressing the knob on it, the sulphuric acid gets mixed with sodium bicarbonate solution producing a lot of carbon dioxide gas. 3. Carbon dioxide gas is neither combustible nor helps combustion. ... Hence, sodium bicarbonate is used in fire extinguishers

Answer 2

Answer:

Explanation:

The fire extinguisher contains a solution of sodium bicarbonate in water and Sulphuric acid in a separate container inside it.  When the fire extinguisher is operated by pressing the knob on it, the Sulphuric acid gets mixed with sodium bicarbonate solution producing a lot of carbon dioxide gas.

2NaHCO3 + H2SO4 → Na2SO4 + 2H2O + 2CO2

Also,

Fire extinguisher Sodium bicarbonate can be used to extinguish small grease or electrical fires by being thrown over the fire, as heating of sodium bicarbonate releases carbon dioxide. However, it should not be applied to fires in deep fryers; the sudden release of gas may cause the grease to splatter.