The rate of the heterogeneous catalytic reaction A(g) + B(g) → C(g) is given by -rA = k.KA.pA.PB/(1 + KA.PA + Kc.pc), where KA and Kc are the adsorption equilibrium constants. The rate controlling step for this reaction is_______________?

Question

Accepted Answer

Surface reaction between absorbed A and absorbed B. The rate law structure suggests that the reaction involves adsorbed species reacting on the surface. Option B describes the most common rate-determining step in Langmuir-Hinshelwood type kinetics.