Question

Effects of Pressure and Temperature on Adsorption?

Answer 1

Answer:

Effect of pressure & temperature-

According to Le Chatelier's principle, the magnitude of adsorption should increase with fall in temperature & since adsorption of a gas leads to decrease of pressure, the magnitude of adsorption increases with increase in pressure.

Answer 2

Answer:

Explanation:

Effect of pressure on the adsorption of a gas on a solid

The fraction of gas adsorbed is proportional to the pressure of the gas. Adsorption increase with pressure reaches the maximum and becomes constant.

Effect of temperature on adsorption of gases on solid

• Adsorption of gases on solid is always exothermic.
• Physical adsorption follows Lechatlier Principle, the amount of gas adsorbed decrease with the increase of temperature.
• Chemisorption increases with increase in the temperature. It reaches the maximum and then decreases.
• The curve obtained by plotting fraction of gas adsorbed and temperature at constant pressure is adsorption isobars.