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Chemical Reaction Engineering

Chemical Reaction Engineering
From Arhenius law, a plot of loge K versus 1/T gives a straight line with a slope of (-E/R). The unit of E/R is

K cal. °K
°K
K cal
K cal/°K

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Chemical Reaction Engineering
Reverse reaction in a chemical equilibrium is favoured by the

Increase in the concentration of one of the reactants
Increase in the concentration of oneof the products
Removal of one of the products regularly
None of these

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Chemical Reaction Engineering
A chemical reaction is of zero order, when the reaction rate is (where, CA = concentration of reactant)

∝ CA
None of these
Independent of temperature
∝ 1/CA

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Chemical Reaction Engineering
Molecularity of a reaction

Can
Both B and C
May not be equal to the order of reaction
Is always equal to the overall order of reaction

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Chemical Reaction Engineering
For the liquid phase parallel reactions:R, rR = K?.CA2; E? = 80 KJ/moleS, rS = K?.CA ; E? = 120 KJ/mole The desired product is R. A higher selectivity of R will be achieved, if the reaction is conducted at

High temperature in a CSTR
Low temperature in a CSTR
Low temperature in a PFR
High temperature in a PFR

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Chemical Reaction Engineering
Which of the following will give maximum gas conversion?

Semi-fluidised bed reactor
Plug-flow catalytic reactor
Fluidised bed reactor
Fixed bed reactor

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