How is adsorption of a gas related to its critical temperature?

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Please find below the solution to the asked query:

 The critical temperature, Tc is the minimum temperature above which a gas cannot be liquefied. This means that gases having higher values of critical temperature can be easily liquefied as compared to gases having lower critical temperature values. And as higher is the liquefaction greater will be the Van der Waal's force of attraction and greater is the adsorption.

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ollowing are the factors which influence the adsorption of gases by solids.             1.         Surface area             2.         Nature of gas             3.         Temperature             4.         Pressure  The process of Adsorption is an Exothermic Reaction. Thus according to Le-chatlier’s Principle, the magnitude of adsorption should increase with decrease in temperature. Infact it is found to be so in case of physical adsorption because vanderwaal’s forces are strong at low temperatures. However, the chemisorption first increases with rise in temperature and then starts decreasing. The initial increase shows that like chemical reactions, chemisorption also needs activation energy.
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