What is the range of enthalpy of adsorption i | vedclass

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(C) Physical adsorption (physisorption) is characterized by weak van der Waals forces between the adsorbate and the adsorbent. Because these forces ar

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$-20$ to $-40$

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(C) Physical adsorption (physisorption) is characterized by weak van der Waals forces between the adsorbate and the adsorbent. Because these forces are weak,the enthalpy of adsorption is low,typically ranging from $-20 \, kJ \, mol^{-1}$ to $-40 \, kJ \, mol^{-1}$. In contrast,chemical adsorption (chemisorption) involves strong chemical bonds and has a much higher enthalpy of adsorption,typically ranging from $-80 \, kJ \, mol^{-1}$ to $-400 \, kJ \, mol^{-1}$.

What is the range of enthalpy of adsorption in physical adsorption? $(kJ \, mol^{-1})$

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