Penetration theory relates the average mass transfer co-efficient (K) with diffusivity (D) as

Question: Brunaur, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates is not used to derive BET equation ?
[A].

Langmuir’s assumption applies to every adsorbed layer.

[B].

There is no dynamic equilibrium between successive layer.

[C].

The adsorbed layer may be polymolecular in thickness and the heat of adsorption in each layer (except the first one) is involved in each of the evaporation process.

[D].

none of these.

Answer: Option B

Explanation:

No answer description available for this question.