Question

Critical temperature for CO₂ is 30.98 °C. What does this mean? Explain other two critical constants.

Answer 1

It means that CO₂ cannot be liquefied above 30.98°C which is its critical temperature(T_c). Critical pressure(P_c) – it is the pressure required to liquefy the gas at critical temperature. Critical volume( V_c) – it is the volume of one mole of the gas at T_c and P_c.