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Question
Write the characteristics of adsorption.
Short Note
Solution
Following are the characteristics of adsorption:
- Adsorption is a surface phenomenon.
- It depends upon the surface area of the adsorbent.
- It involves physical forces (van der Waals forces) or chemical forces (chemical or covalent bonds).
- Adsorbate is always present in higher concentrations on the surface of an adsorbent than in the bulk.
- Adsorption is dependent on temperature (of the surface) and pressure (of adsorbate gas).
- It takes place with the evolution of heat (with some exceptions).
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Factors Affecting Adsorption of Gases on Solids
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