Question

Short Answer
1. Give two important characteristics of physiscorption​

Answer 1

Explanation:

1.there is no specificity as any gas can be absorbed onto the space.

2.it is reversible in nature and it is depond on pressure as well as temperature.

Answer 2

Explanation:

The characteristics of physisorption are:

1. There is no specificity as any gas can be adsorbed onto the surface

2. It has been observed that highly liquifiable gases are physically adsorbed more strongly.

3. It is reversible in nature and is dependent on pressure as well as temperature. An increase in pressure decreases the volume of gas and thus increases the adsorption of gas molecules. Conversely, a decrease in pressure will cause the removal of gas molecules from the solid surface.

4. Since the adsorption process is exothermic, the physical adsorption occurs readily at low temperature and decreases with increasing temperature (Le-Chatelier’s principle).

5. Porous substances are better adsorbents as an increased surface area promotes adsorption.

6. Does not require energy for activation.

plz mark this answer as brainliest