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Rate of physisorption increases with :...

Rate of physisorption increases with :

A

decrease in temperature

B

increase in temperature

C

decrease in temperature

D

decreases in surace area.

Text Solution

Verified by Experts

The correct Answer is:
A
Rate of physisorption increases with dcreases in temperature because of exothermic nature of the process of adsorption.
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The correct statements pertaining to the adsorption of a gas on a solid surface are (i) Adsorption is always exothermic (ii) Physisorption may transform into chemisorption at high temperature (iii) Physisorption increases with increasing temperature but chemisorotion decrease with increasing temperature (iv) Chemisorption is more exothermic than physisoption, however, it is very slow due to higher energy of activation

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