Question

The Langmuir adsorption isotherm is deduced
using the assumption
(a) the adsorption sites are equivalent in their
ability to adsorb the particles
(b) the heat of adsorption varies with coverage
(c) the adsorbed molecules interact with each
other
(d) the adsorption takes place in multilayers.

Answer 1

Answer:

I think it is the option b

Answer 2

(a) the adsorption sites are equivalent in their ability to adsorb the particles

Explanation:

The Langmuir adsorption isotherm is deduced using the assumption that the adsorption sites are equivalent in their ability to adsorb the particles. Langmuir adsorption isotherm shows the following characteristics:

1. All the adsorption sites are equivalent.
2. Adsorbed molecules do not interact.
3. All adsorption occurs through the same mechanism.
4. At the maximum adsorption, only a mono-layer is formed.

Option A is the answer