Chemical Reaction Engineering
Which of the following is the optimum operating condition for an exothermic reversible reaction taking place in a plug-flow reactor?

Very low temperature should be used throughout the reaction
None of these
Very high temperature should be used throughout the reaction
Temperature should be high in the beginning and decreased towards the end of the reaction

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Chemical Reaction Engineering
In an ideal mixed reactor (at steady state), the

Space time is equivalent to holding time for constant density systems
Exit stream has the same composition as the fluid within the reactor
All of these
Composition throughout the reactor remains same

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