Question

Langmuir adsorption isotherm is deduced using the assumption

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

Answer 1

The correct option is C

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

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