Chemical Reaction Engineering
If n = overall order of a chemical reaction. a = initial concentration of reactant. t = time required to complete a definite fraction of the reaction. Then pick out the correct relationship.

T ∝ 1/an
T ∝ an
T ∝ 1/an + 1
T ∝ 1/an - 1

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Chemical Reaction Engineering
The heat of reaction

Depends on the mechanism of reaction only
Is independent of the mechanism of reaction
Depends on the pressure only
Depends on both pressure and mechanism of reaction

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

Conversion is cent per cent after three hours
Three reactor volumes of feed can be processed every hour
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

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