What is the chemical equation for a fire extinguisher?
What is the chemical equation for a fire extinguisher?
A carbon based fire has an equation of CH4+2O2->CO2+2H2O which then the foam puts out the fire by smothering it or basically taking away the oxygen from the equation. A fire extinguisher is made by forming a tank out of steel and then the pressure vessel inside by aluminum.
What type of fire extinguisher is used for generators?
Fires in live electrical equipment – motors, generators, switches and appliances – where a non- conducting extinguishing agent Multi-Purpose (ABC), Regular Dry Chemical, Halon 1211 or Carbon Dioxide is required.
What is the chemical in a wet chemical fire extinguisher?
The ‘chemical’ element of wet chemical fire extinguishers is potassium. Potassium salts are sprayed out as a fine mist (gently, so as not to spread the burning oil or fat), and these react to create a soapy film on the surface of the substance on fire.
Why sodium bicarbonate 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.
What chemical is in dry powder fire extinguisher?
A dry chemical extinguisher sprays a very fine powder of sodium bicarbonate (NaHCO3, baking soda), potassium bicarbonate (KHCO3, nearly identical to baking soda), or monoammonium phosphate ((NH4)H2PO4). These solids coat the fuel and smother the fire.
What type of fire extinguisher is used for flammable liquids?
Class B
Class B. Class B fires involve flammable and combustible liquids such as gasoline, alcohol, oil-based paints, lacquers. Therefore, extinguishers with a B rating are designed to extinguish fires involving flammable and combustible liquids.
What is L2 and M28 powder?
The L2 Powder and M28 Powder Fire Extinguishers (special powder extinguishers) are designed specifically to fight combustible metal fires (class D), such as sodium, lithium, magnesium and aluminium. The L2 version contains powder formulated for extinguishing all metal fires including lithium.
Which chemical is used in wet chemical powder?
How do Wet Chemical Extinguishers work? Wet Chemical Fire Extinguishers contains a solution of potassium which effectively attacks the flame in two methods: Firstly the mist cools the fire and lowers the temperature to stop the fire spreading, also prevents splashing of the hot oils/fat.
Is calcium carbonate used in fire extinguisher?
Calcium carbonate, although much less reactive, is also not used for the same reason. Carbonates which are poisonous, such as barium, lead and the like, are not suitable. The carbonates of cobalt, chromium, cadmium and bismuth may be used but they are relatively expensive.
Why Sodium bicarbonate is used in fire extinguisher?
