As the title states, why should $\\ce{CO2}$ fire extinguishers containing carbon dioxide not be used on fires with magnesium metal? I understand that $\\ce{CO2}$ extinguishers work by displacing oxy…
See answer (1) Best Answer. Copy. This is because once the magnesium starts to burn, the uninhibited chemical reaction dominates the fire’s need for oxygen (carbon dioxide usually puts fires out …
What is a disadvantage of carbon dioxide fire extinguishers OSHA?
What is one disadvantage of a fire extinguisher? Disadvantages: limited to class A fires only. leaves a small amount of residue after the fire has been extinguished. water is an electrical conductor, making the extinguisher unsuitable if the class of fire has an electrical supply, or for use near live electrical equipment.
According to How Stuff Works, fire extinguishers use carbon dioxide to displace the oxygen necessary for a fire to burn, extinguishing the blaze. Fires need oxygen, fuel, and heat to ignite, and removing any one of those three components can put out a fire. Carbon dioxide extinguishers work because carbon dioxide molecules are heavier than …
People Also Ask why wont carbon dioxide fire extinguishers put out magnesium fires
Why is carbon dioxide used in fire extinguishers?
Why Is Carbon Dioxide Used in Fire Extinguishers? Why Is Carbon Dioxide Used in Fire Extinguishers? According to How Stuff Works, fire extinguishers use carbon dioxide to displace the oxygen necessary for a fire to burn, extinguishing the blaze.
Why does magnesium burn with carbon dioxide?
It’s not just carbon dioxide. Just about any gas that contains oxygen enables magnesium to continue to burn because magnesium is strongly reducing enough to pull oxygen out of the gas molecules, displacing the other element. The reaction with carbon dioxide given by MaxW is typical.
Why are fire extinguishers not suitable for chemical fires?
These extinguishers are not suitable for chemical or electrical fires since the liquid can conduct electricity and cause flammable agents to spread. Other extinguishers coat the fuel, forming a barrier between the flammable material and the oxygen in the surrounding air.
How do fire extinguishers put out fires?
In addition to carbon dioxide extinguishers, fire extinguishers use other methods to put out fires. Wet extinguishers spray a liquid that absorbs heat, similar to pouring water on a campfire.
People Also Searches why wont carbon dioxide fire extinguishers put out magnesium fires
Magnesium fires – Episode 11 Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher