Chemical Reaction Engineering
The gas phase reaction 2A ⇋ B is carried out in an isothermal plug flow reactor. The feed consists of 80 mole % A and 20 mole % inerts. If the conversion of A at the reactor exit is 50%, then CA/CA0 at the outlet of the reactor is

43898
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43864
43833

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

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Chemical Reaction Engineering
Semibatch reactor is preferred, when a/an

A gas is to be reacted with liquid (e.g. hydrogenation of fat)
A highly exothermic reaction is to be controlled
All of these
Undersirable side reaction (at high concentration of one of the reactants) is to be avoided

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Chemical Reaction Engineering
Space velocity

Is the maximum feed rate pre unit volume of reactor for a given conversion
Describes the extensive operating characteristics of a tubular flow reactor
Is a measure of the ease of the reaction
All of these

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