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Chemical Engineering - Chemical Reaction Engineering

Exercise : Chemical Reaction Engineering - Section 7
21.
Which of the following factors control the deactivation of a porous catalyst pellet ?
Decay reactions.
Pore diffusion.
Form of surface attack by poison.
All (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
For the reaction, A + B 2B + C,
rA = rB
rA = -rB
rA = 2rB
rA = rB/2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
Transition state theory gives the rate constant as
K α e-E/RT
K α eE/RT
K α T . e-E/RT
K α T . e-E/RT
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
A liquid phase reaction is to be carried out under isothermal conditions. The reaction rate as a function of conversion has been determined experimentally and is shown in the figure given below. What choice of reactor or combination of reactors will require the minimum overall reactor volume, if a conversion of 0.9 is desired ?
CSTR followed by a PFR
PFR followed by a CSTR
CSTR followed by a PFR followed by a CSTR.
PFR followed by a CSTR followed by a PFR.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
Pick out the wrong statement.
Use of different catalysts in a reversible catalytic chemical reaction does not change the equilibrium composition.
Alumina is added as a promoter to iron catalyst in ammonia synthesis reaction.
Activation energy for a reaction is obtained from the intercept of the Ar-rhenious plot.
Presence of inerts affects the equilibrium conversion of reactants in a chemical reaction.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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