Which one of the following compounds is used as a chemical in...

Which one of the following compounds is used as a chemical in certain type of fire extinguishers

Options

AWashing soda
BBaking soda
CCaustic soda
DSoda ash

Correct answer

B. Baking soda

Step-by-step solution

$2{NaHCO}_{3} ( aq ) + {H}_{2}{SO}_{4} ( aq ) \to {Na}_{2}{SO}_{4} ( aq ) + 2{H}_{2}O ( l ) + 2{CO}_{2} ( g )$

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. Carbon dioxide gas is neither combustible nor helps combustion.

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