Question on: JAMB Chemistry - 2024
What method is suitable for the separation of gases present in air?
A
Catalytic cracking of liquid air
B
Fractional distillation of liquid air
C
Thermal decomposition of air
D
Catalytic decomposition of air
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Correct Option: B
The suitable method is fractional distillation of liquid air:
- Air is cooled and compressed to liquid.
- Gases vaporize at different boiling points; nitrogen vaporizes first.
- Catalytic cracking, thermal decomposition, and catalytic decomposition are unsuitable as they change chemical composition.
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