Question

In van der Waal's equation of state for a non-ideal gas, the term that accounts for intermolecular forces is

(a) (v - b)

(b) RT

(c) \(\left(P + \frac a{V^2}\right)\)

(d) (RT)^-1

Answer 1

Correct option is (c) \(\left(P + \frac a{V^2}\right)\)

The van der Waals’ equation of state for 1 mole of the non-ideal gas.is denoted by the equation

= p + \(\frac a {V^2}\) (V − b)

= RT.

The factor (p + \(\frac a {V^2}\)) is accountable for the inter-molecular force,

whereas the term (V − b) is accountable to the molecular volume.