Question

In Van der Waals equation of state for a non-ideal gas, the term that account for intermolecular force is:

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

Answer 1

Answer: (C)

$(P+\frac{a}{V^2})$

In vander Waals’ equation of state :

The first factor $(p+a/V^2)$ correct for intermolecular force while the second term $(V-b)$ correct for molecular volume.

Since vander waals equation of state is $(p+a/V^2)(V-b)=RT$