Question

In the corrections made to ideal gas equation for real gases, the reductions in pressure due to forces of attractions between the molecules is directly proportional to:

• A. $\frac{n}{V}$
• B. $\frac{n^2}{V^2}$
• C. $V-nb$
• D. $nb$

Answer 1

Answer: (B)

$\frac{n^2}{V^2}$

Pressure correctness according to Van der Waal's equation can be given as:

Pressure correction $=\frac{a{n}^2}{V^2}$

Thus, reduction in pressure due to foreces of attraction between molecules $\propto \frac{n^2}{V^2}$.