Question
Chemistry Question on Adsorption
The Langmuir adsorption isotherm is deduced by using the assumption :
A
the adsorption takes place in multilayers
B
the adsorption sites are equivalent in their ability to adsorb the particles
C
the heat of adsorption varies with coverage
D
the adsorbed molecules interact with each other
Answer
the adsorption sites are equivalent in their ability to adsorb the particles
Explanation
Solution
The main points of Langmuir- theory of adsorption are as
(i) Adsorption takes place on the surface of the solid only till the whole of the surface is completely covered with a unimolecular layer of the adsorbed gas.
(ii) Adsorption consist of two opposing processes
(a) condensation and (b) evaporation condensation.