Question
Given van der Waals constant for NH3, H2, O2 and CO2 are respectively 4.17, 0.244, 1.36 and 3.59, which one of the following gases is most easily liquefied?
NH3
H2
CO2
O2
Solution
A.
NH3
Vander Waal constant 'a', signifies intermolecular forces of attraction.
Higher is the value of 'a', easier will be the liquefaction of gas.
