The temperature above which the gas cannot be liquefied at any pressure, is — States of Matter and Gaseous State Chemistry Question

💡 Solution & Explanation

By setting $(\partial P/\partial V)_T = 0$ and $(\partial^2 P/\partial V^2)_T = 0$, we find $V_c = 3b$ and $T_c = \sqrt{8a / 27Rb}$. Therefore, correct answer is D.