The critical temperature and pressure of a gas are 340 K and 42 atm, respectively. The gas can be li — States of Matter and Gaseous State Chemistry Question

💡 Solution & Explanation

Liquefaction can occur if the temperature is equal to or below the critical temperature (T ≤ Tc = 340 K) and the pressure is equal to or greater than the corresponding vapor pressure (which is Pc at Tc). Thus, liquefaction is possible at (340 K, 45 atm) and at (320 K, 42 atm). It is impossible at T > Tc (350 K).