The reason why a catalyst increases the rate of reaction is that, it

Chemical Reaction Engineering
The reason why a catalyst increases the rate of reaction is that, it

Increases the activation energy

Decreases the molecular collision diameter

Decreases the energy barrier for reaction

None of these

Increases the activation energy

Decreases the molecular collision diameter

Decreases the energy barrier for reaction

None of these

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Chemical Reaction Engineering
For a heterogeneous catalytic reaction

The catalyst does not form an intermediate complex with the reactant

Free energy of activation is lowered in the presence of catalyst, which remains unchanged at the end of reaction

The surface of the catalyst does not play an important role during reaction

A relatively small amount of catalyst can cause the conversion of large amount of reactants which does not mean that catalyst concentration is important

The catalyst does not form an intermediate complex with the reactant

Free energy of activation is lowered in the presence of catalyst, which remains unchanged at the end of reaction

The surface of the catalyst does not play an important role during reaction

A relatively small amount of catalyst can cause the conversion of large amount of reactants which does not mean that catalyst concentration is important

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Chemical Reaction Engineering
For a zero order reaction, the concentration of product increases with the

Increase in initial concentration

Increase of reaction time

Decrease in total pressure

Total pressure

Increase in initial concentration

Increase of reaction time

Decrease in total pressure

Total pressure

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Chemical Reaction Engineering
The rate of the chemical reaction A → B doubles as the concentration of A i.e.., CA is doubled. If rate of reaction is proportional to CAn, then what is the value of n for this reaction?

2

0.5

1

2

0.5

1

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Chemical Reaction Engineering
An exothermic reaction takes place in an adiabatic reactor. The product temperature __________ reactor feed temperature.

Is always less than

Is always greater than

May be greater or less than

Is always equal to

Is always less than

Is always greater than

May be greater or less than

Is always equal to

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Chemical Reaction Engineering
For the non catalytic reaction of particles with surrounding fluid, the same needed to achive the same fractional conversion for particles of different unchanging sizes is proportional to the particle diameter, when the __________ is the controlling resistance.

Diffusion through ash layer

Either A, B or C

Chemical reaction

Film diffusion

Diffusion through ash layer

Either A, B or C

Chemical reaction

Film diffusion

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Chemical Reaction Engineering

Chemical Reaction Engineering The reason why a catalyst increases the rate of reaction is that, it

Chemical Reaction Engineering For a heterogeneous catalytic reaction

Chemical Reaction Engineering For a zero order reaction, the concentration of product increases with the

Chemical Reaction Engineering The rate of the chemical reaction A → B doubles as the concentration of A i.e.., CA is doubled. If rate of reaction is proportional to CAn, then what is the value of n for this reaction?

Chemical Reaction Engineering An exothermic reaction takes place in an adiabatic reactor. The product temperature __________ reactor feed temperature.

Chemical Reaction Engineering For the non catalytic reaction of particles with surrounding fluid, the same needed to achive the same fractional conversion for particles of different unchanging sizes is proportional to the particle diameter, when the __________ is the controlling resistance.

Chemical Reaction Engineering
The reason why a catalyst increases the rate of reaction is that, it

Chemical Reaction Engineering
For a heterogeneous catalytic reaction

Chemical Reaction Engineering
For a zero order reaction, the concentration of product increases with the

Chemical Reaction Engineering
The rate of the chemical reaction A → B doubles as the concentration of A i.e.., CA is doubled. If rate of reaction is proportional to CAn, then what is the value of n for this reaction?

Chemical Reaction Engineering
An exothermic reaction takes place in an adiabatic reactor. The product temperature __________ reactor feed temperature.

Chemical Reaction Engineering
For the non catalytic reaction of particles with surrounding fluid, the same needed to achive the same fractional conversion for particles of different unchanging sizes is proportional to the particle diameter, when the __________ is the controlling resistance.