1.

A particle adsorption process process has the following characteristics, (i) It arises due to va der waal's forces and (ii) it is reversible. Identify the correct statement that describes the above adsorption process:

Answer»

Adsorption is monolayer
Adsorption increase with increase in temperature
Enthalpy of adsorption is greater than `100kJmol^(-1)`
Energy of ACTIVATIONS is low

Solution :The characteristics given suggest that this should be physical adsorption.
Physical adsorption USUALLY takes place at low temperature and decrease with increase in temperature. The force of ATTRACTION holding the ADSORBATE are van der waal's forces. Heat of adsorption is low. It is reversible and forms multimolecular layer. It does not acquire any activated energy.


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