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)

$\left( P+\frac{{{n}^{2}}a}{{{V}^{2}}} \right)(V-nb)=nRT$

Answer 2

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