Which of the following factors affect physical adsorption?
Surface area of adsorbent
Nature of adsorbate and adsorbent
Pressure and temperature
All of the above
Physisorption and chemisorption are two different types of adsorption processes. Physical adsorption is affected by various factors such as the surface area of the adsorbent, the nature of the adsorbate and adsorbent, pressure and temperature. A higher surface area of the adsorbent provides more surface area for the adsorbate molecules to get adsorbed. The nature of the adsorbate and adsorbent plays a crucial role in determining the strength of Van der Waals forces between them. The pressure and temperature affect the adsorption by changing the concentration of adsorbate molecules and their kinetic energy.