Chemical Reaction Engineering
Catalyst is a substance, which __________ chemical reaction.

Increases the speed of a
Decreases the speed of a
Can either increase or decrease the speed of a
Alters the value of equilibrium constant in a reversible

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Chemical Reaction Engineering
Pick the WRONG design guideline for a reactor in which the reactions, A → R (desired) and A → S (undesired) are to take place. The ratio of the reaction rates is rR/rS = (k₁/k₂).Csub>Aa-b

Use high pressure and eliminate inerts, when a > b
Use batch reactor or plug flow reactor, when a > b
Avoid recycle, when a > b
Use CSTR with a high conversion, when a > b

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Chemical Reaction Engineering
Promoter.

Increases the number of active centres by increasing the unevenness of catalyst surface and by creating discontinuities in the crystals
Atlers the position of equilibrium in a reversible reaction
Initiates a chemical reaction and is a catalyst by itself
All of these

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