cause and effect

Carbon dioxide

          

          If we ganna talk about carbon dioxide depend on their cause and effect, the first time let me tall somethink about carbon dioxide. carbon dioxide is a colorless, odorless, incombustible gas, CO ₂ , present in the atmosphere and formed during respiration, usually obtained from coal, coke, or natural gas by combustion, from carbohydrates by fermentation, by reaction of acid with limestone or other carbonates, or naturally from springs: used extensively in industry as dry ice, or carbon dioxide snow, in carbonated beverages, fire extinguishers, etc.

I have good question for Carbon dioxide to enrich our knowledge  about Carbon dioxide depend on cause and effect.

1. how carbondioxide work as fire Extinguisher ?

cause :

Generally CO2 is used and the Reasons are

1. CO2 is heavier than O2, so easy to displace. (N2 is lighter as compare O2)
2. CO2 does not react with fuel easily.
3. CO2 density is higher as compare N2, so will do a nice job of blanketing.

Because carbon dioxide does not support most combution, it is heavier than air, and as a result its cuts the interaction of air with the burning substance. without air (oxygen), burning is impossible  

 effect :

CO2 is non-flammable and displaces air - hence the oxygen in air required for combustion. It’s also cold when it emerges from the extinguisher.

It is useful for electrical fires, particularly on electronic equipment since it is non-conducting and safe to use on live electrical circuits, and does not damage equipment or require complex cleanup.

1. How carbondioxide work as dry ice ? 

 

  cause :


The solid form of carbon dioxide is known as dry ice. A block of dry ice has a surface temperature of -109.3 degrees Fahrenheit (-78.5 degrees C). Dry ice also has the very nice feature of sublimation -- as it breaks down, it turns directly into carbon dioxide gas rather than a liquid. 

 effect :

The super-cold temperature and the sublimation feature make dry ice great for refrigeration. For example, if you want to send something frozen across the country, you can pack it in dry ice. It will be frozen when it reaches its destination, and there will be no messy liquid left over like you would have with normal ice.