Updated: Question in GATE 2012 Chemical Engeneering Paper with Solution

July 10, 2012

A question in GATE 2012 Chemical Engeneering Paper with Solution has been updated:

The rate-controlling step for the solid-catalyzed irreversible reaction $A + B \longrightarrow C$ is known to be the reaction of adsorbed A with adsorbed B to give adsorbed C . If P_i is the partial pressure of component i and K_i is the adsorption equilibrium constant of component i , then the form of the Langmuir-Hinshelwood rate expression will be

rate ∝ $\cfrac{P_A P_B}{(1+K_AP_A+K_BP_B+K_CP_C)^2}$
rate ∝ $\cfrac{P_A P_B}{1+K_AP_A+K_BP_B+K_CP_C}$
rate ∝ $\cfrac{P_AP_B}{P_C}$