What is the range heat of Chemisorption?

80-240 kJmol^-1

The correct answer is option 2. 80-240 kJmol^-1

To solve this question first we need to know about the heat involved in chemisorption and why the enthalpy of chemisorption is high.

Since, the chemisorption occurs by the formation of chemical bonds of the adsorbate on the surface of adsorbent. Thus, very strong bonds are involved in this adsorption process. So, the amount of heat liberated is high.

So, based on our discussion we can say that the amount of heat evolved in chemisorption lies in the range of \(80−240\) \((KJ\, \ mol^{−1})\).

Chemical adsorption is established on the solid surface by substantial sharing of electrons between the adsorbate and adsorbent and results in the formation of strong ionic and covalent bonds. Also, another point to keep in mind is that this chemical adsorption is an irreversible process.