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Chemical Engineering - Chemical Reaction Engineering

Exercise : Chemical Reaction Engineering - Section 7
41.
The importance of diffusion in a catalyst are increased by
large catalyst particle size.
an active surface of the catalyst.
small pore diameter.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
A back mix reactor is
suitable for gas phase reactions.
ideal at very low conversion.
same as plug flow reactor (PFR).
same as ideal stirred tank reactor.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
Which one is the rate controlling step in a solid-gas non-catalytic reaction occurring at very high temperature?
Pore diffusion
Film diffusion
Ash layer diffusion
Chemical reaction
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
The rate of the heterogenous catalytic reaction A(g) + B(g) C(g) is given by -rA = k.KA.pA.PB/(1 + KA.PA + Kc.pc), where KA and Kc are the adsorption equilibrium constants. The rate controlling step for this reaction is
absorption of A.
surface reaction between absorbed A and absorbed B.
surface reaction between absorbed A and B in the gas phase.
surface reaction between A in the gas phase and absorbed B.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
For a __________ order chemical reaction, , the half life period is independent of the initial concentration of the reactant A.
zero
first
second
third
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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