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
B.E.T. method of finding out surface area of a catalyst, uses the extension of __________ isotherm.

Tempkin

Langmuir

Freundlich

None of these

Tempkin

Langmuir

Freundlich

None of these

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Chemical Reaction Engineering
In case of a __________ reactor, the composition in the reactor and at the exit of the reactor is the same.

Back-mix

Batch

Tubular

Semi-batch

Back-mix

Batch

Tubular

Semi-batch

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Chemical Reaction Engineering
Photo-chemical reactions occur in presence of

Darkness

Monochromatic radiation only

Solid catalysts

Sunlight

Darkness

Monochromatic radiation only

Solid catalysts

Sunlight

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Chemical Reaction Engineering
The 'E' curve for a non-ideal reactor defines the fraction of fluid having age between t and t + dt

At the outlet

In the reactor

At the inlet

Averaged over the inlet and outlet

At the outlet

In the reactor

At the inlet

Averaged over the inlet and outlet

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Chemical Reaction Engineering
The reactions of high molecularity are rare, because

Many body collisions are not favoured energetically

Of requirement of very large concentration for such reactions

Of low probability of many body collisions

Of very large activation energy of many bodies

Many body collisions are not favoured energetically

Of requirement of very large concentration for such reactions

Of low probability of many body collisions

Of very large activation energy of many bodies

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Chemical Reaction Engineering

Chemical Reaction Engineering B.E.T. method of finding out surface area of a catalyst, uses the extension of __________ isotherm.

Chemical Reaction Engineering In case of a __________ reactor, the composition in the reactor and at the exit of the reactor is the same.

Chemical Reaction Engineering Photo-chemical reactions occur in presence of

Chemical Reaction Engineering The 'E' curve for a non-ideal reactor defines the fraction of fluid having age between t and t + dt

Chemical Reaction Engineering The reactions of high molecularity are rare, because

Chemical Reaction Engineering
B.E.T. method of finding out surface area of a catalyst, uses the extension of __________ isotherm.

Chemical Reaction Engineering
In case of a __________ reactor, the composition in the reactor and at the exit of the reactor is the same.

Chemical Reaction Engineering
Photo-chemical reactions occur in presence of

Chemical Reaction Engineering
The 'E' curve for a non-ideal reactor defines the fraction of fluid having age between t and t + dt

Chemical Reaction Engineering
The reactions of high molecularity are rare, because