Question

Which of the following gas can be liquified very easily

(1) O2 (Tc =154.4K)
(2) C2H2 (Tc = 308.6K)
(3) CH4 (Tc=190.7K)
(4) He (Tc = 5.3K)​

Answer 1

Answer:

see all these r non polar and u must know that for non polar more the value of vander waal constant more easy the liquefaction.

also for such molecules

value of a directly proportional to their molecular masses

so most moleculer mass is of o2 so it will be most easily liquefied.

Explanation:

hope u understood