Chemical Reaction Engineering
Velocity of a reaction depends upon the

Concentration of the reactants
All of these
Temperature at which the reaction is carried
Nature of the reactants

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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
All of these
Exit stream has the same composition as the fluid within the reactor
Composition throughout the reactor remains same

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Chemical Reaction Engineering
A space time of 3 hours for a flow reactor means that

The time required to process one reactor volume of feed (measured at specified conditions) is 3 hours
It takes three hours to dump the entire volume of the reactor with feed
Three reactor volumes of feed can be processed every hour
Conversion is cent per cent after three hours

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