At a given value of E/R (ratio of activation energy and gas constant), the ratio of the rate constants at 500°K and 400°K is 2, if Arrhenious law is used. What will be this ratio, if transition state theory is used with the same value of E/R?

Chemical Reaction Engineering
At a given value of E/R (ratio of activation energy and gas constant), the ratio of the rate constants at 500°K and 400°K is 2, if Arrhenious law is used. What will be this ratio, if transition state theory is used with the same value of E/R?

2.24

1.6

2.5

2

2.24

1.6

2.5

2

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Chemical Reaction Engineering
Effectiveness factor (E) of a catalyst pellet is defined as, E = (actual rate within pore of catalyst/rate if notsnowed by pore diffusion) Effectiveness factor for a first order reaction is given by (where, T = Thiele modulus)

Tan T/T

None of these

Tan hT/T

Tan hT/tan T

Tan T/T

None of these

Tan hT/T

Tan hT/tan T

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Chemical Reaction Engineering
Rate determining step in a reaction consisting of a number of steps in series is the __________ step.

Slowest

Data insufficient; can't be predicted

Intermediate

Fastest

Slowest

Data insufficient; can't be predicted

Intermediate

Fastest

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Chemical Reaction Engineering
The irreversible reaction, X → Y, is the special case of the reversible reaction, X ⇋ Y, in which the

Concentration of

Equilibrium constant is infinite

Fractional conversion of

All of these

Concentration of

Equilibrium constant is infinite

Fractional conversion of

All of these

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Chemical Reaction Engineering
Semibatch reactor is preferred, when a/an

A highly exothermic reaction is to be controlled

All of these

A gas is to be reacted with liquid (e.g. hydrogenation of fat)

Undersirable side reaction (at high concentration of one of the reactants) is to be avoided

A highly exothermic reaction is to be controlled

All of these

A gas is to be reacted with liquid (e.g. hydrogenation of fat)

Undersirable side reaction (at high concentration of one of the reactants) is to be avoided

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Chemical Reaction Engineering
The eddy diffusivity for a liquid in plug flow must be

∞

0

1

Between 0 and 1

∞

0

1

Between 0 and 1

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Chemical Reaction Engineering

Chemical Reaction Engineering At a given value of E/R (ratio of activation energy and gas constant), the ratio of the rate constants at 500°K and 400°K is 2, if Arrhenious law is used. What will be this ratio, if transition state theory is used with the same value of E/R?

Chemical Reaction Engineering Effectiveness factor (E) of a catalyst pellet is defined as, E = (actual rate within pore of catalyst/rate if notsnowed by pore diffusion) Effectiveness factor for a first order reaction is given by (where, T = Thiele modulus)

Chemical Reaction Engineering Rate determining step in a reaction consisting of a number of steps in series is the __________ step.

Chemical Reaction Engineering The irreversible reaction, X → Y, is the special case of the reversible reaction, X ⇋ Y, in which the

Chemical Reaction Engineering Semibatch reactor is preferred, when a/an

Chemical Reaction Engineering The eddy diffusivity for a liquid in plug flow must be

Chemical Reaction Engineering
At a given value of E/R (ratio of activation energy and gas constant), the ratio of the rate constants at 500°K and 400°K is 2, if Arrhenious law is used. What will be this ratio, if transition state theory is used with the same value of E/R?

Chemical Reaction Engineering
Effectiveness factor (E) of a catalyst pellet is defined as, E = (actual rate within pore of catalyst/rate if notsnowed by pore diffusion) Effectiveness factor for a first order reaction is given by (where, T = Thiele modulus)

Chemical Reaction Engineering
Rate determining step in a reaction consisting of a number of steps in series is the __________ step.

Chemical Reaction Engineering
The irreversible reaction, X → Y, is the special case of the reversible reaction, X ⇋ Y, in which the

Chemical Reaction Engineering
Semibatch reactor is preferred, when a/an

Chemical Reaction Engineering
The eddy diffusivity for a liquid in plug flow must be