IIT JEE , AIEEE Forum - Chemistry , Physical Chemistry

ashok_p_ap

4. Which is distilled first?

a. liquid H₂b. liquid O₂ c. liquid CO₂ d. liquid N₂

joyfrancis

is it b)?

varshavallig

is it d)
!!!!!!!!!!!!!

harsha_27

Distillation is based on the BP of the compounds.More volatile compounds are distilled out first.

So the one having least boiling point will be distilled out first.

So (a) Liquid H₂ will be the answer.

rakesh61

ya H2 has least BP due to least molecular wt and hence less vander waal force of attraction and hemce most volatile

tka

yeah well H2 is the answer...

boiling point depends on the forces of interaction between two molecules of the liquid. since the molecules here dont have net charge, we can assume that the only forces acting in between the molecules is vanderwaals forces of attraction.

we know that vanderwaals forces of attraction is more for larger surface area. the one with the least surface area has least molecular interaction, least boiling point and hence is distilled first.

evidently H2 has the least surface area . so H2 is distilled first...

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