Which among the following is true for chemisorption?
Which among the following is true for chemisorption?
Heat of adsorption is in the range of $20-40 \mathrm{~kJ} \mathrm{~mol}^{-1}$
It is multimolecular layered
Van der Waals forces are involved
It is favored at high temperature up to certain limit
Solution
Chemical adsorption
- It is caused by chemical bond formation.
- Heat of adsorption is high.
- High temperature is favorable. It increases with increase of temperature.
- It forms unimolecular layer.