- #1
kartikwat
- 49
- 0
Why is it that gas with higher critical temperature are adsorbed to greater extent on surface of adsorbent as compared to gas with lower critical temperature?
Last edited:
Adsorption is the process by which molecules of a substance adhere to the surface of another substance. This differs from absorption, which is when one substance is taken up into the bulk of another substance.
Some factors that can affect adsorption include the surface area of the adsorbent material, the concentration and properties of the adsorbate (substance being adsorbed), temperature, and the pH of the system.
Generally, increasing temperature leads to an increase in adsorption as it provides more energy for molecules to overcome intermolecular forces and adhere to the adsorbent surface. However, this may not always be the case as some adsorbates may have a decrease in adsorption with increasing temperature due to changes in their physical and chemical properties.
The surface area of the adsorbent material is a critical factor in adsorption as it provides more sites for the adsorbate molecules to interact with and adhere to. A larger surface area means a higher adsorption capacity and efficiency.
The pH of a system can affect adsorption by altering the surface charge of the adsorbent material, which can in turn affect the affinity of the adsorbate molecules for the surface. Additionally, changes in pH can also alter the solubility and chemical properties of the adsorbate, leading to changes in its adsorption behavior.