How to Separate Different Gases from Air?
We know that Air is a mixture of different gases like Nitrogen, Oxygen, Carbon Dioxide etc.
They are separated by using Fractional Distillation
Steps:
Air is compressed and cooled to Liquid
This is done by increasing pressure and decreasing temperature
Liquid Carbon Dioxide flows out as dry ice
Remaining Liquid Air is Warmed up
Heat is applied slowly by using fractional distillation column
Different Gases get separated at different Heights
This is because of Difference in boiling points of different gases
Oxygen Argon Nitrogen
Boiling Point (in celsius) -183 -186 -189
Nitrogen and Argon Move to the top
Oxygen remains at the bottom, it is cooled as liquid Oxygen
