Question

If ‘b' is vander waal constant of argon then the molecular diameter of argon molecule is represented by the expression.

Answer 1

Answer:

The van der Waals equation of state approaches the ideal gas law PV=nRT as the values of these constants approach zero. The constant a provides a correction for the intermolecular forces. Constant b is a correction for finite molecular size and its value is the volume of one mole of the atoms or molecules.

Explanation:

b = 4× Volume occupied by the molecules in one mole of gas.

=4×N×(43πr3)

r=[3×2416×(227)×6.023×1023]

=1.355×10−8cm

d=2×r

=2×1.355×10−8cm

=2.71A∘

Hence answer is (C)