Chemical Reaction Engineering
The rate of the heterogenous 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 isA. absorption of A.

Surface reaction between absorbed A and B in the gas phase
Surface reaction between A in the gas phase and absorbed B
Surface reaction between absorbed A and absorbed B
Absorption of A

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Chemical Reaction Engineering
For reactions in parallel viz A → P (desired product) and A → Q (unwanted product), if the order of the desired reaction is higher than that of the undesired reaction, a

Both A and B
Batch reactor is preferred over a single CSTR for high yield
Single CSTR is the most suitable
Tubular reactor is preferred over a single CSTR for high yield

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