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Adsorption and Colloids — Chemistry STD 11 Science — Question

Maharashtra BoardEnglish MediumSTD 11 ScienceChemistryAdsorption and Colloids3 Marks
Question
Write characteristics of adsorption.
✓

Answer

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 concentration 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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