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A particular adsorption process has the following characteristics: (i) It arises due to van der Waals forces and (ii) it is reversible. Identify the correct statement that describes the above adsorption process:

Options

  1. AAdsorption is monolayer
  2. BAdsorption increases with increase in temperature
  3. CEnthalpy of adsorption is greater than 100 k J m o l - 1
  4. DEnergy of activation is low

Correct answer

D. Energy of activation is low

Step-by-step solution

In the case of physical adsorption there is almost nil energy of activation and very low enthalpy change.

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