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Chemical Reaction Engineering

Chemical Reaction Engineering
For a __________ order reaction, the units of rate constant and rate of reaction are the same.

Zero
Fractional
Second
First

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Chemical Reaction Engineering
If the time required to complete a definite fraction of reaction varies inversely as the concentration of the reactants, then the order of reaction is

2
3
1

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Chemical Reaction Engineering
The catalytic activity of enzymes is due to their capacity to lower the __________ energy.

Kinetic
Potential
Activation
None of these

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Chemical Reaction Engineering
If the pore diffusion controls in a catalytic reaction, the apparent activation energy Ea is equal to

(E + ED) where ED is activation due to diffusion
(E + ED)/2
ED/2
The intrinsic activation energy E

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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
D
√d
D2

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Chemical Reaction Engineering
Calcination reaction of limestone (CaCO₃ → CaO + CO₂) goes to completion in the rotary kiln, because

CaO is not dissociated
CaO is more stable than CaCO₃
CO₂ escapes continuously
Of high calcination temperature

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