Question

Out of N₂ and O₂ present in air, which will distil first when liquified air is subjected to fractional distillation?

Answer 1

Fractional distillation is used in separating liquids having boiling points close to one another. In fractional distillation, the experimental setup is complex consisting of complex apparatus and a fractionating column. It is used in the process of refining crude oil. It can also be used in separating the gases from the mixture of air.

Final answer: The boiling point temperature of ${\mathrm{N}}_2$(Nitrogen) is -196$°$C and the boiling point temperature of ${\mathrm{O}}_2$(oxygen) is -183$°$C. In fractional distillation, the liquid having a lower boiling point will distill first. So ${\mathrm{N}}_2$ (Nitrogen) will distill first and then ${\mathrm{O}}_2$ (oxygen).