Question

Given van der Waals constants 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?

Options

• NH₃

• H₂

• CO₂

• O₂

Answer 1

NH₃

Explanation:

van der Waals’ constant ‘a’ signifies the intermolecular forces of attraction between the particles of gas. So, the higher the value of ‘a’, the easier the liquefaction of gas will be.