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All adsorptions occur with release in en...

All adsorptions occur with release in energy and are found to be exothermic in nature. In an adsorption process, the enthalpy change for adsorption of one_____ of adsorbate on an adsorbent surface is called enthaply or heat of adsorption for the particular adsorption.

A

mole

B

gram

C

gram atom

D

gram molecule

Text Solution

Verified by Experts

The correct Answer is:
A
Enthalpy change is always expressed per mole. Moreover mole is preferred over gram atom or gram molecules as it is a general term.
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Knowledge Check

  • The heat of adsorption of physical adsorption is nearly

    A
    20 - 40 kJ /mol
    B
    40 - 100 kJ / mol
    C
    40 - 200 kJ / mol
    D
    40 - 400 kJ / mol

  • In the case of adsorption the concentration of adsorbate is

    A
    more on the surface as compared to both
    B
    less on the surface as compared to both
    C
    different on the surface as compared to both
    D
    same through out the solid

  • Adsorption power of the adsorbent can be increased:

    A
    by increasing surface area
    B
    by finely dividing it
    C
    by making it porous
    D
    All of these