What is critical temperature? How does it affect the liquefaction of gas?

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Solution

Critical temperature: It is defined as the temperature above which a gas can not be liquified whatever pressure may be applied.
It affects over the liquefaction of gas:
An increase in critical temperature results in an increase in the intermolecular force of attraction between molecules.
Because of this increase in the intermolecular force of attraction, gas liquefaction will become easy.

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