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.......... has a higher enthalpy of adso...

.......... has a higher enthalpy of adsorption

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Chemisorption has higher enthalpy of adsorption, i.e. 80-240 kJ `mol^(-1)` as it involves chemical bond formation (in case of physisorption, it is 20-40 kJ `mol^(-1)`).
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Knowledge Check

  • Physical adsorption:

    A
    Is reversible
    B
    Decreases with temperature
    C
    Is exothermic
    D
    All

  • Physical adsorption:

    A
    Is reversible
    B
    Decreases with temperature
    C
    Is exothermic
    D
    All

  • Physical adsorption is :

    A
    Highly specific
    B
    Reversible
    C
    Irreversible
    D
    Monolayer adsorption

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