Chemical Reaction Engineering
For the liquid phase parallel reactions:R, rR = K?.CA2; E? = 80 KJ/moleS, rS = K?.CA ; E? = 120 KJ/mole The desired product is R. A higher selectivity of R will be achieved, if the reaction is conducted at

High temperature in a PFR
Low temperature in a CSTR
Low temperature in a PFR
High temperature in a CSTR

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Chemical Reaction Engineering
For all positive reaction orders for a particular duty,

Ratio of the volume of the mixed reactor to that of the plug-flow reactor decreases with order
Density variation during reaction affects design
Reactor size is independent of the type of flow
Mixed reactor is always larger than the plug-flow reactor

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Chemical Reaction Engineering
For an ideal gas mixture undergoing a reversible gaseous phase chemical reaction, the equilibrium constant

Is independent of pressure
Increases /decreases with pressure depending on the stoichiometric co-efficients of the reaction
Decreases with pressure
Increases with pressure

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