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Chemical Reaction Engineering

Chemical Reaction Engineering
Rate determining step in a reaction consisting of a number of steps in series is the __________ step.

Intermediate
Fastest
Slowest
Data insufficient; can't be predicted

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Chemical Reaction Engineering
For a mixed flow reactor operating at steady state, the rate of reaction is given by

- dCsub>A/dt
FA0/V . Xsub>A
FA0/V - dCsub>A/dt
FA0/V + dCsub>A/dt

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Chemical Reaction Engineering
A reaction which is catalysed by a base is catalysed by all substances which have a tendency to

Gain an electron
Gain a proton
None of these
Lose a proton

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Chemical Reaction Engineering
If the rate of a chemical reaction becomes slower at a given temperature, then the

Initial concentration of the reactants remains constant
Free energy of activation is lower
Entropy changes
Free energy of activation is higher

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Chemical Reaction Engineering
A backmix reactor

Is same as ideal stirred tank reactor
Is most suitable for gas phase reaction
Is same as plug-flow reactor
Employs mixing in axial direction only

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Chemical Reaction Engineering
The time needed to achieve the same fractional conversion for particles of different sizes (d) when chemical reaction controls, is proportional to

D1.5
D2
D
√d

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