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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 adso
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 :
Enthalpy of adsorption is greater than 100 kJ mol−1.
Energy of activation is low.
Adsorption is monolayer.
Adsorption increases with increase in temperature.
Answers (1)
The correct statement that describes the above adsorption process is option 2. The energy of activation for physisorption is low. Physisorption is multilayer. It decreases with an increase in temperature and the enthalpy of physisorption is low (20−40 kJ/mol).
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