Question

Give reason carbon dioxide finds its application in gas estenguisher

Answer 1

Answer:

Explanation:

• CO2 is a colorless and, in normal concentrations, odorless gas. It doesn't react with burning materials, so it doesn't create any toxic or other by-products when used to suppress a fire. It's therefore a clean gas, meaning it leaves no trace of its use when suppressing a fire.

• Carbon dioxide doesn't conduct electricity, making it an ideal fire suppressant for use in computer rooms, electrical distribution stations and other locations where a large amount of electricity may be present.

1. CO2 acts on fires in two ways:

• The release of the gas under pressure has a cooling effect, as can be seen by the resulting mist cloud and ice particles; the gas also displaces the oxygen that's necessary to maintain combustion.

These are the reasons behind the uses of the co2 in fire extinguisher.

But the co2 is not directly used in the extinguisher

• In the inner part of the extinguisher, the whole container is filled with the strong solution of sodium carbonate.

And there is a glass tube in the bottom of the container contains sulfuric acid.

The glass tube is broken with a powerful pressure when required.

And the solutions are reacted with each other and carbon dioxide is produced. Then the co2 is released through the tiny hole in a very high pressure and extinguishes the fire.

Na2CO3 + H2SO4 > Na2SO4 + H2O + CO2

But the fire causes by the magnesium can't be extinguished by co2

Because…. when magnesium burns Heavy heat is generated. In the heavy heat the co2 resolved in oxygen and carbon

So in the contact of the oxygen, Magnesium burns even better and instead of extinguishing, the fire increases.

Answer 2

Answer:

As carbon dioxide is not a good supporter as well as can be converted in foam easily.It cuts out the supply of oxygen from air.

Explanation:

As oxygen is needed for combustion and is cut out by carbon dioxide ,no further combustion takes place