Write three distinct differences between physical adsorption and chemi

1.	Write three distinct differences between physical adsorption and chemisorption.
Answer» Physical adsorption 1. Forces of attraction between the adsorbent and adsorbate molecules are weak Van der Waals’ forces, 2. Heat of adsorption is low (20-40 kJ mol¹) 3. It is temporary and reversible. Chemical adsorption 1. Forces between the adsorbent and the adsorbate are strong chemical bond. 2. Heat of adsorption is high (80-24OkJ mol¹) 3. It is permanent and irreversible.

Write three distinct differences between physical adsorption and chemisorption.

Answer»

Physical adsorption

1. Forces of attraction between the adsorbent and adsorbate molecules are weak Van der Waals’ forces,

2. Heat of adsorption is low (20-40 kJ mol¹)

3. It is temporary and reversible.

Chemical adsorption

1. Forces between the adsorbent and the adsorbate are strong chemical bond.

2. Heat of adsorption is high (80-24OkJ mol¹)

3. It is permanent and irreversible.