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Chemical Engineering - Chemical Reaction Engineering

Exercise : Chemical Reaction Engineering - Section 3
46.
A first order gaseous phase reaction is catalysed by a non-porous solid. The kinetic rate constant and the external mass transfer co-efficients are k and kg respectively. The effective rate constant (keff) is given by
keff = k + kg
keff = (k+ kg)/2
keff = (kkg)1/2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
Arrhenious equation represents graphically the variation between the __________ and temperature.
rate of reaction
frequency factor
rate constant
activation energy
Answer: Option
Explanation:
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48.
__________ catalytic reaction is involved in the thermal cracking of gas oil.
Homogeneous
Homogeneous non
Heterogeneous
Heterogeneous non
Answer: Option
Explanation:
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49.
Variables affecting the rate of homogeneous reactions are
pressure and temperature only.
temperature and composition only.
pressure and composition only.
pressure, temperature and composition.
Answer: Option
Explanation:
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50.
A chemical reaction occurs when the energy of the reacting molecules is __________ the activation energy of the reaction.
less than
equal to
more than
equal to or more than
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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