Home
Class 12
CHEMISTRY
The correct statement(s) pertaining to t...

The correct statement(s) pertaining to the adsorption of a gas on a solid surface is/are :

A

Adsorption is always exothermic

B

Physisorption may transform into chemisorption at high temperature

C

Physisorption increases with increasing temperature but chemisorption decreases with increasing temperature.

D

Chemisorption is more exothermic than physisorption, however it is very slow due to higher energy of activation.

Text Solution

Verified by Experts

The correct Answer is:
A, B, D
(A) `DeltaH=-ve` for adsorption
(B) fact
(D) chemical bonds are stronger than vander waal's forces so chemical adsorption is more exothermic.
Promotional Banner

Similar Questions

Explore conceptually related problems

Choose the incorrect statement pertaining to the adsorption of gas on a solid surface

In Langumir's model of adosrption of a gas on a solid surface :

In Langumir's model of adosrption of a gas on a solid surface :

The following statement relate to the adsorption of gases on a solid surface. Identify the incorrect statement among them :

The correct variation for adsorption of a gases on a solid surface with pressure of the gas, in the following manner is

The physical adsorption of gases on the solid surface is due to :

Spontaneous adsorption of a gas on a solid surface is exothermic process because

The incorrect statement about physical adsorption is

Sponetaneous adsorption of a gas on solid surface is an exothermic process because

Explain the terms: Physisorption and Chemisorption. How does adsorption of a gas on a solid surface vary with pressure?