States of Matter - Result Question 32
####32. Given van der Waals constants for $NH_3, H_2, O_2$ and $CO_2$ are respectively 4.17, 0.244, 1.36 and 3.59 , which one of the following gases is most easily liquefied?
(a) $NH_3$
(b) $H_2$
(c) $CO_2$
(d) $O_2$
[2018]
Show Answer
Solution:
- (a) van der Waal constant ’ $a$ ‘, signifies intermolecular forces of attraction.
Higher is the value of ’ $a$ ‘, easier will be the liquefaction of gas.
