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Why does physisorption decrease with the...

Why does physisorption decrease with the increase of temperature ?

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`underset(("Adsorbare"))(Gas+ Solid) underset( " Desorption Adsorbent")overset("Adsorption")hArr Gas//solid +Heat`
Physisorption is an exothermic process therefore it is fovoured at low temperature with increase in temperature desorption takes place.
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