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