For the reaction step to be the controlling mechanism in a catalytic reversible reaction, which of the following is valid?(a) Rate of adsorption > Rate of desorption(b) Rate of adsorption < Rate of desorption(c) Rate of adsorption = Rate of desorption(d) Rate of adsorption ≠ Rate of desorptionThis question was posed to me during an internship interview.The origin of the question is Packed Bed Catalytic Reactor topic in division Packed Bed Catalytic Reactor, Fluidised Bed and Transport Reactors of Chemical Reaction Engineering

For the reaction step to be the controlling mechanism in a catalytic r

1.	For the reaction step to be the controlling mechanism in a catalytic reversible reaction, which of the following is valid?(a) Rate of adsorption > Rate of desorption(b) Rate of adsorption < Rate of desorption(c) Rate of adsorption = Rate of desorption(d) Rate of adsorption ≠ Rate of desorptionThis question was posed to me during an internship interview.The origin of the question is Packed Bed Catalytic Reactor topic in division Packed Bed Catalytic Reactor, Fluidised Bed and Transport Reactors of Chemical Reaction Engineering
Answer» CORRECT ANSWER is (c) Rate of ADSORPTION = Rate of desorption To elaborate: If rate of adsorption of GAS equals its rate of desorption, the mechanism is in EQUILIBRIUM. Reaction becomes the controlling mechanism.

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