When the knob of the fire extinguisher is opened, the sulphuric acid reacts with sodium bicarbonate producing a large amount of carbon dioxide. As carbon dioxide is non-combustible and heavier than air, it cuts off the air supply of the oxygen and extinguishes the flame.
What is present in fire extinguisher along with H2SO4?
sodium bicarbonate and sodium carbonate.
Why H2SO4 is used in fire extinguisher?
Sulphuric acid is non flammable so soda acid is most common fire extinguisher. Carbon dioxide is liberated by the action of sulphuric acid on baking soda or sodium bicarbonate. … Due to this the supply of air is cut off and fire is extinguished.
Is H2SO4 used in fire extinguisher?
The reaction of sulfuric acid with baking soda liberated carbon dioxide, which increases the percentage of carbon dioxide. Hence, the sulphuric acid is used as in fire extinguishers.
What are fire extinguishers filled with?
“BC” indicating that they are designed to extinguish class B and C fires. At USC, “ABC” fire extinguishers are filled with a fine yellow powder. The greatest portion of this powder is composed of monoammonium phosphate. Nitrogen is used to pressurize the extinguishers.
Why na2co3 is used in fire extinguisher?
Sodium bicarbonate is used in fire extinguishers because carbon dioxide is produced when it reacts with the high heat of the fire.
Which is used as soda acid fire extinguisher?
Soda-acid fire extinguishers comprises of sodium bicarbonate and sulphuric acid. It is the most efficient house-hold fire extinguisher. It consists of a strong iron vessel with a side discharge nozzle. The iron vessel is filled with a sodium bicarbonate solution.
Which acid and base is used in a soda acid fire extinguisher?
The sulphuric acid is combined with sodium bicarbonate solution and creates an amount of carbon dioxide gas when the fire extinguisher is operated by turning the knob on it. Carbon dioxide gas is not combustible, nor does it endorse combustion.
Is H2SO4 sulfuric acid?
Sulfuric acid is a strong mineral acid with the molecular formula H2SO4. It is soluble in water, and is mainly used in ore processing, oil refining, fertilizer manufacturing, and wastewater processing. The chemical formula for sulfuric acid is H2SO4.
Is baking soda used in fire extinguisher?
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. … Hence, sodium bicarbonate is used in fire extinguishers.
What do you do with old fire extinguishers?
If the fire extinguisher is partially or fully charged, call your fire department to ask if they accept drop-offs. If not, take the canister to a hazardous waste disposal facility. If the fire extinguisher is empty, squeeze the lever to ensure no pressure remains inside.