Chemical Engineering > GATE 2012 > Heterogeneous Reactions
The rate-controlling step for the solid-catalyzed irreversible reaction A+B⟶C is known to be the reaction of adsorbed A with adsorbed B to give adsorbed C. If Pi is the partial pressure of component i and Ki is the adsorption equilibrium constant of component i, then the form of the Langmuir-Hinshelwood rate expression will be
A
rate ∝PAPB/(1+KAPA+KBPB+KCPC)
B
rate ∝PAPB/(1+KAPA+KBPB+KCPC)2
C
rate ∝PAPB/(1+KAPA+KBPB+KCPC)0.5
D
rate ∝PAPB/PC

Correct : b

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