Q. 33

The critical temperature (T c) and critical pressure (Pc) of CO2 are 30.98°C and 73atm respectively. Can CO2(g) be liquefied at 32°C and 80atm pressure?

Answer :

The critical temperature (Tc) of any gasis defined as the value of temperature above which no gas can be liquefied, and the pressure at the critical temperature is calledcritical pressure (Pc).

So, as the CO2 gas cannot be liquefied at temperature which is greater than its critical temperature i.e 30.98°C even by applying any pressure. So as the given temperature is 32°C by applying a pressure of 80atm the CO2 gas cannot be liquefied.


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