Critical temperature: The temperature above which a gas cannot be liquefied regardless of the amount of pressure applied. (K/°C).
At this point the specific latent heat is zero, as no further energy is required to complete the change in state of the substance.
Critical pressure: The minimum pressure required to cause liquefaction of a gas at its critical temperature. (kPa/Bar)
The latent heat of vaporisation is the heat energy required to change the state of a substance from liquid to vapour.
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