Question

a and b are vander Waals' constants for gases. Chlorine is more easily liquefied than ethane because

(a) a and b for Cl₂>a and b for C₂H₆

(b) a and b for Cl₂<a and b for C₂H₆

(c) a for Cl₂ >a for C₂H₆ but b for Cl₂ >b for C₂H₆

(d) a for Cl₂ >a for C₂H₆ but b for Cl₂ < b for C₂H₆

Answer 1

Correct option (d) a for Cl₂ >a for C₂H₆ but b for Cl₂ < b for C₂H₆

Explanation:

van der Waals' constant a is due to force of attraction and b due to finite size of molecules.

Thus, greater ihe vaiue a ani smaller the value of b, larger the liquefaction