Question

The value of vander Waal's constant '$a$' for the gases $O_2,N_2,N{H}_3$ and $C{H}_4$ are $1.36$, $1.39$, $4.17$ and $2.253$ $L^2$ atm $m^{-2}$, respectively. The gas which can most easily be liquefied is:

• A. $O_2$
• B. $N_2$
• C. $N{H}_3$
• D. $C{H}_4$

Answer 1

The correct option is C $N{H}_3$

The correct answer is C.

because the ${}^{\prime }{a}^{\prime }$is directly related to forces of attraction.

Hence greater the value of ${}^{\prime }{a}^{\prime }$ more easily the gas is liquified.