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Surface Chemistry — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistrySurface Chemistry2 Marks
Question
Write the differences between physisorption and chemisorption with respect to the following:
  1. Specificity.
  2. Temperature dependence.
  3. Reversibility and.
  4. Enthalpy change.
✓

Answer

Physisorption Chemisorption
It is not very specific. It is highly specific.
It is usually takes place at low temperature and decreases with increasing temperature. It takes place at high temperature.
It is reversible. It is irreversible.
Low enthalpy of adsorption. High enthalpy of adsorption.

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