Question

The term that accounts for intermolecular force in Vander Waal's equation for non ideal gas is:

• A. $RT$
• B. $V-b$
• C. $(P+\frac{a}{V^2})$
• D. $[RT{]}^{-1}$

Answer 1

The correct option is C $(P+\frac{a}{V^2})$

The term that accounts for intermolecular force in Vander Waal's equation for non ideal gas is $(P+\frac{a}{V^2})$
The term $\left(\frac{a}{V^2}\right)$ represents pressure correction due to presence of intermolecular forces of attraction between gas molecules. Here the van der waals constant ${}^{\prime }{a}^{\prime }$ is a proportionality constant called the coefficient of attraction.Its value depends upon the nature of the gas.