Question
The Langmuir adsorption isotherm is deduced using the assumption:
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the adsorption takes place in multilayers
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The adsorption sites are equivalent in their ability to adsorb the particles
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The adsorbed molecules interact with each other
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The adsorbed molecules interact with each other
Solution
A.
the adsorption takes place in multilayers
The main points of Langmuir theroy 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 fo two opposing processes (a) condensation, and (b) evaporation.
iii) The rate of condensation depend upon the uncovered surface of the adsorbent available for condensation.
