Question

The Langmuir adsorption isotherm is deduced using which of the following assumption?

• A. The adsorbed molecules interact with each other
• B. The adsorption takes place in multilayer
• C. The adsorption sites are equivalent in their ability to adsorb the particles
• D. The heat of adsorption varies with coverage

Answer 1

Answer: (C)

The adsorption sites are equivalent in their ability to adsorb the particles

The Langmuir adsorption isotherm is based on the assumption that all adsorption sites are equivalent and that the ability of a particle to bind there is independent of whether nearly sites are occupied or not.

The correct option is $C.$