Chemical Reaction Engineering
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?

None of these
Langmuir
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
There is no dynamic equilibrium between successive layer

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Chemical Reaction Engineering
A batch reactor is

Least expensive to operate for a given rate
Most suitable for very large production rate
Suitable for gas-phase reactions on commercial scale
Suitable for liquid phase reactions involving small production rate

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