Experimental data for the water gas shift reaction (CO + H2O + CO2 + H2) match the rate expression given below xz|ccolazo - Concert Cco2CH2 Ch20 K2 1 + K3Cco (-rco) = Pcatalyst Based on the proposed reaction steps below determine the mechanisms that will match this rate expression. (S represents an active site on the catalyst.) 1. CO+S + CO-S 2. H2O+S + H2O-S 3. CO-S+H2O-SHC02 -S+H2-S 4. CO2-S #CO, +S 5. H-SH,+S 2 or 1. CO+SH CO-S 2. CO-S+H2O + CO2 -S+H, 3. CO2-S + CO2 +S or 1. H,O+S + H20-S 2. CO+H,0-SCO, +H, -S 3. H-SH,+S Hint: the surface reactions are the limiting steps in these reactions