Chemical Engineering - Chemical Reaction Engineering

11. 

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

A. space time is equivalent to holding time for constant density systems.
B. composition throughout the reactor remains same.
C. exit stream has the same composition as the fluid within the reactor.
D. all (a), (b) and (c).

Answer: Option D

Explanation:

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12. 

The knowledge of initial concentration and rate constant is necessary to determine the half life time of a reaction of __________ order.

A. zero
B. first
C. second
D. none of these

Answer: Option C

Explanation:

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13. 

Which of the following factors control the design of a fluid-solid reactor ?

A. Reaction kinetics for single particle,
B. Size distribution of solids beingtreated.
C. Flow patterns of solids and fluid in the reactor.
D. All (a), (b) and (c).

Answer: Option D

Explanation:

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14. 

A Catalyst

A. increases the equilibrium concentration of the product.
B. changes the equilibrium constant of the reaction.
C. shortens the time to reach the equilibrium.
D. none of these.

Answer: Option C

Explanation:

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15. 

The reaction rate constants at two different temperature T1 and T2 are related by

A.
B.
C.
D.

Answer: Option B

Explanation:

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