Question

The value of $\frac{RT}{PV}$ for a gas at critical condition is how many times of $\frac{RT}{PV}$ at normal condition?

• A. $\frac{8}{3}$
• B. $\frac{3}{8}$
• C. $3$
• D. $\frac{1}{3}$

Answer 1

The correct option is A $\frac{8}{3}$

At the critical temperature and pressure,
$P_c{V}_c=\frac{3}{8}R{T}_c$
i.e., $\frac{8}{3}$ times of $\frac{RT}{PV}$ at normal condition.