Rate constant for a first order reaction does not depend upon reaction time, extent of reaction and the initial concentration of reactants ; but it is a function of reaction temperature. In a chemical reaction, the time required to reduce the concentration of reactant from 100 gm moles/litre to 50 gm moles/litre is same as that required to reduce it from 2 gm moles/litre to 1 gm mole/litre in the same volume. Then the order of this reaction is

Chemical Reaction Engineering
Rate constant for a first order reaction does not depend upon reaction time, extent of reaction and the initial concentration of reactants ; but it is a function of reaction temperature. In a chemical reaction, the time required to reduce the concentration of reactant from 100 gm moles/litre to 50 gm moles/litre is same as that required to reduce it from 2 gm moles/litre to 1 gm mole/litre in the same volume. Then the order of this reaction is

1

3

2

0

1

3

2

0

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Chemical Reaction Engineering
With increase in temperature, the rate constant obeying Arhenious equation

Decreases exponentially

Increases

Decreases

Can either increase or decrease ; depends on the frequency factor

Decreases exponentially

Increases

Decreases

Can either increase or decrease ; depends on the frequency factor

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Chemical Reaction Engineering
Kinetics of a catalytic reaction can be best studied on a/an __________ reactor.

Either A, B and C

Integral (plug flow)

Differential (flow)

Mixed

Either A, B and C

Integral (plug flow)

Differential (flow)

Mixed

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Chemical Reaction Engineering
The rate of a chemical reaction is almost doubled for every 10°C rise in temperature. The rate will increase __________ times, if the temperature rises form 10 to 100°C.

512

112

256

612

512

112

256

612

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Chemical Reaction Engineering
For an ideal mixed flow reactor (CSTR), the exit age distribution E(t) is given by

None of these

A dirac delta function

A ramp function

A step function

None of these

A dirac delta function

A ramp function

A step function

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Chemical Reaction Engineering
A catalyst loses its activity due to

Agglomeration of metal particles caused by thermal sintering of the solid surface

All of these

Loss in surface area of the active component

Covering of the catalytic active sites by a foregin substance

Agglomeration of metal particles caused by thermal sintering of the solid surface

All of these

Loss in surface area of the active component

Covering of the catalytic active sites by a foregin substance

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Chemical Reaction Engineering

Chemical Reaction Engineering With increase in temperature, the rate constant obeying Arhenious equation

Chemical Reaction Engineering Kinetics of a catalytic reaction can be best studied on a/an __________ reactor.

Chemical Reaction Engineering The rate of a chemical reaction is almost doubled for every 10°C rise in temperature. The rate will increase __________ times, if the temperature rises form 10 to 100°C.

Chemical Reaction Engineering For an ideal mixed flow reactor (CSTR), the exit age distribution E(t) is given by

Chemical Reaction Engineering A catalyst loses its activity due to

Chemical Reaction Engineering
With increase in temperature, the rate constant obeying Arhenious equation

Chemical Reaction Engineering
Kinetics of a catalytic reaction can be best studied on a/an __________ reactor.

Chemical Reaction Engineering
The rate of a chemical reaction is almost doubled for every 10°C rise in temperature. The rate will increase __________ times, if the temperature rises form 10 to 100°C.

Chemical Reaction Engineering
For an ideal mixed flow reactor (CSTR), the exit age distribution E(t) is given by

Chemical Reaction Engineering
A catalyst loses its activity due to