Ncert Exercises & Solutions

On the basis of the data given below, the gas which shows the least adsorption on a definite amount of charcoal is-

Gas	CO₂	SO₂	CH₄	H₂
Critical temp./K	304	630	190	33

1. CO₂
2. SO₂
3. CH₄
4. H₂

HINT: Lesser the value of the critical temperature of gases lesser will be the extent of adsorption

Explanation:

Lesser the value of the critical temperature of gases lesser will be the extent of adsorption. Here H₂ has the lowest value of critical

temperature,i.e. 33 K. Hence, hydrogen gas shows the least adsorption on a definite amount of charcoal.