NEET | 2018Gaseous StateEasy

Question

Given van der Waals constant for NH3, H2 and CO2 are respectively 4.17, 0.244, 1.36 and 3.59, which one of the following gases is most easily liquefied?

Options

A.

NH3

B.

H2

C.

O2

D.

CO2

Solution

Critical temperature ∝vanderwaal constant(a) maximum "a" ⇒ gas with maximum TC ⇒easiest
liquification = NH3

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