Which of the following is the optimum operating condition for an exothermic reversible reaction taking place in a plug-flow reactor?

Chemical Reaction Engineering
Which of the following is the optimum operating condition for an exothermic reversible reaction taking place in a plug-flow reactor?

Temperature should be high in the beginning and decreased towards the end of the reaction

Very low temperature should be used throughout the reaction

Very high temperature should be used throughout the reaction

None of these

Temperature should be high in the beginning and decreased towards the end of the reaction

Very low temperature should be used throughout the reaction

Very high temperature should be used throughout the reaction

None of these

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Chemical Reaction Engineering
With the same reaction time, initial concentration and feed rate, the reaction 2A → B is carried out separately in CSTR and P.F. reactor of equal volumes. The conversion will be

Data insufficient; can't be predicted

Higher in P.F. reactor

Higher in CSTR

Same in both the reactors

Data insufficient; can't be predicted

Higher in P.F. reactor

Higher in CSTR

Same in both the reactors

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Chemical Reaction Engineering
A catalyst is said to be a negative catalyst, ifit

All of these

Retards the rate of reaction

Reduces the value of equilibrium constant

Does not initiate the reaction

All of these

Retards the rate of reaction

Reduces the value of equilibrium constant

Does not initiate the reaction

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Chemical Reaction Engineering
What is the order of a chemical reaction whose rate is deter-mined by the variation of one concentration term only?

Second

First

Zero

Third

Second

First

Zero

Third

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Chemical Reaction Engineering
From collison theory, the reaction rate constant is proportional to

Exp(- E/2RT)

Exp(- E/RT)

√T

Tm.exp(- E/RT)

Exp(- E/2RT)

Exp(- E/RT)

√T

Tm.exp(- E/RT)

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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

3

2

0

1

3

2

0

1

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Chemical Reaction Engineering

Chemical Reaction Engineering Which of the following is the optimum operating condition for an exothermic reversible reaction taking place in a plug-flow reactor?

Chemical Reaction Engineering With the same reaction time, initial concentration and feed rate, the reaction 2A → B is carried out separately in CSTR and P.F. reactor of equal volumes. The conversion will be

Chemical Reaction Engineering A catalyst is said to be a negative catalyst, ifit

Chemical Reaction Engineering What is the order of a chemical reaction whose rate is deter-mined by the variation of one concentration term only?

Chemical Reaction Engineering From collison theory, the reaction rate constant is proportional to

Chemical Reaction Engineering
Which of the following is the optimum operating condition for an exothermic reversible reaction taking place in a plug-flow reactor?

Chemical Reaction Engineering
With the same reaction time, initial concentration and feed rate, the reaction 2A → B is carried out separately in CSTR and P.F. reactor of equal volumes. The conversion will be

Chemical Reaction Engineering
A catalyst is said to be a negative catalyst, ifit

Chemical Reaction Engineering
What is the order of a chemical reaction whose rate is deter-mined by the variation of one concentration term only?

Chemical Reaction Engineering
From collison theory, the reaction rate constant is proportional to