Question

At high pressure , the van der Waals equation is reduced to
A. `pV = nRT`
B. `(p + (n^(2)a)/(V^(2)))V = nRt`
C. `p + (n^(2)a)/(V^(2)) = nRt`
D. `p(V - nb) = nRt`

Answer 1

Correct Answer - D
When the pressure is high , the volume occupied by the gas is low. Hence, the constant `b` cannot be neglected relative to small volume occupied by the gas is low. Hence, the constant `b` cannot be neglected relative to small volume. However , the term `an^(2)//V^(2)` can be neglected relative to large pressure.