Question

van der Waals equation of state is obeyed by real gases. For $ n $ moles of a real gas, the expression will be

• A. $ \left( \frac{p}{n}+\frac{na}{{{V}^{2}}} \right)\left( \frac{V}{n-b} \right)=RT $
• B. $ \left( P+\frac{a}{{{V}^{2}}} \right)(V-b)=nRT $
• C. $ \left( P+\frac{na}{{{V}^{2}}} \right)(nV-b)=nRT $
• D. $ \left( P+\frac{{{n}^{2}}a}{{{V}^{2}}} \right)(V-nb)=nRT $

Answer 1

Answer: (D)

van der Waals equation for the $n$ moles of a real gas is
$ \left( p+\frac{{{n}^{2}}a}{{{V}^{2}}} \right)(V-nb)=nRT $