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Why does physisorption decrease with the...

Why does physisorption decrease with the increase of temperature ?

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Generally, physisorption is a reversible process. Physical adsorption involves weak van der Waals' force. These forces become weaker at higher temperature. As a result, the extent of physical adsorption decreases with increases in temperature .
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CHHAYA PUBLICATION-SURFACE CHEMISTRY-Solved NECRT TEXTBOOK PROBLEMS
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  2. Why does physisorption decrease with the increase of temperature ?

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