question_answer 61)

  The critical temperature (\[{{T}_{c}}\]) and critical pressure (\[{{p}_{c}}\]) of\[C{{O}_{2}}\] are \[30.98{}^\circ C\]and 73 atm respectively. Can \[C{{O}_{2}}\] (g) be liquefied at \[32{}^\circ C\]and 80 atm pressure?

Answer:

  No, a gas cannot be liquefied above critical temperature, whatever the pressure is applied.