NEET Chemistry Surface Chemistry Questions Solved


Giving appropriate examples, explain how the two types of processes of adsorption

(physisorption and chemisorption) are influenced by the prevailing temperature,

the surface area of adsorbent and the activation energy of the process?

                    Physisorption                                          Chemisorption

1.  Temperature: It decreases with                  1.  It increases with increase in temperature 

increase in temperature.                                      initially after adsorption it is decreasing.

2.  Surface area of adsorbent: The                   2.  It also increases with increase in surface

adsorption increases with increase                        area of adsorbent.

in surface area of adsorbent.

3.  Activation energy: It requires                      3.  It requires high activation energy.

very low or no activation energy.

Difficulty Level:

  • 74%
  • 20%
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