The rate expression for a heterogenous catalytic reaction is given by, - rA = K.KA PA(1 + KA.PA + Kr.PR), where K is surface reaction rate constant and KA and KR are absorption equilibrium constants of A and R respectively. If KR PR >> (1 + KA PA), the apparent activation energy EA is equal to (given E is the activation energy for the reaction and ΔHR and ΔHA are the activation energies of adsorption of R and A)

Chemical Reaction Engineering
The rate expression for a heterogenous catalytic reaction is given by, - rA = K.KA PA(1 + KA.PA + Kr.PR), where K is surface reaction rate constant and KA and KR are absorption equilibrium constants of A and R respectively. If KR PR >> (1 + KA PA), the apparent activation energy EA is equal to (given E is the activation energy for the reaction and ΔHR and ΔHA are the activation energies of adsorption of R and A)

E + ΔHA

ΔHA + ΔHR

E + ΔHA - ΔHR

E

E + ΔHA

ΔHA + ΔHR

E + ΔHA - ΔHR

E

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Chemical Reaction Engineering
An irreversible first order reaction is being carried out in a CSTR and PFR of same volume. The liquid flow rates are same. The relative conversion will

Depend on the temperature

Be same in both cases

Be more in CSTR than in PFR

Be more in PFR than in CSTR

Depend on the temperature

Be same in both cases

Be more in CSTR than in PFR

Be more in PFR than in CSTR

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Chemical Reaction Engineering
The optimum performance for reactors operating in parallel is obtained when the feed stream is distributed in such a way, that the

Space time for parallel lines is different

Larger reactors have more space time compared to smaller ones

Space time for each parallel line is same

None of these

Space time for parallel lines is different

Larger reactors have more space time compared to smaller ones

Space time for each parallel line is same

None of these

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Chemical Reaction Engineering
The catalyst in a second order reversible reaction increases the rate of the forward reaction

And decreases that of backward reaction

And backward reaction equally

Only

To a greater extent than that of the backward reaction

And decreases that of backward reaction

And backward reaction equally

Only

To a greater extent than that of the backward reaction

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Chemical Reaction Engineering
Which of the following is an autocatalytic reaction?

Ammonia synthesis reaction

Enzyme fermentation reaction

Microbial fermentation reaction

Photochemical reactions

Ammonia synthesis reaction

Enzyme fermentation reaction

Microbial fermentation reaction

Photochemical reactions

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Chemical Reaction Engineering
Mean residence time is equal to the space time, when

There is no change in number of moles in gaseous reaction

The feed rate is measured at temperature and pressure in the reactor

The temperature, pressure and the density of reaction mixture remains constant throughout the reactor

All of these

There is no change in number of moles in gaseous reaction

The feed rate is measured at temperature and pressure in the reactor

The temperature, pressure and the density of reaction mixture remains constant throughout the reactor

All of these

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Chemical Reaction Engineering

Chemical Reaction Engineering An irreversible first order reaction is being carried out in a CSTR and PFR of same volume. The liquid flow rates are same. The relative conversion will

Chemical Reaction Engineering The optimum performance for reactors operating in parallel is obtained when the feed stream is distributed in such a way, that the

Chemical Reaction Engineering The catalyst in a second order reversible reaction increases the rate of the forward reaction

Chemical Reaction Engineering Which of the following is an autocatalytic reaction?

Chemical Reaction Engineering Mean residence time is equal to the space time, when

Chemical Reaction Engineering
An irreversible first order reaction is being carried out in a CSTR and PFR of same volume. The liquid flow rates are same. The relative conversion will

Chemical Reaction Engineering
The optimum performance for reactors operating in parallel is obtained when the feed stream is distributed in such a way, that the

Chemical Reaction Engineering
The catalyst in a second order reversible reaction increases the rate of the forward reaction

Chemical Reaction Engineering
Which of the following is an autocatalytic reaction?

Chemical Reaction Engineering
Mean residence time is equal to the space time, when