The rate constant of a chemical reaction increases by 100 times when the temperature is increased from 400 °K to 500 °K. Assuming transition state theory is valid, the value of E/R is

Chemical Reaction Engineering
The rate constant of a chemical reaction increases by 100 times when the temperature is increased from 400 °K to 500 °K. Assuming transition state theory is valid, the value of E/R is

8764°K

8987°K

8621°K

9210°K

8764°K

8987°K

8621°K

9210°K

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Chemical Reaction Engineering
__________ catalytic reaction is involved in the thermal cracking of gas oil.

Homogeneous

Heterogeneous non

Heterogeneous

Homogeneous non

Homogeneous

Heterogeneous non

Heterogeneous

Homogeneous non

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Chemical Reaction Engineering
A batch adiabatic reactor at an initial temperature of 373°K is being used for the reaction, A → B. Assume the heat of reaction is - 1kJ/mole at 373°K and heat capacity of both A and B to be constant and equal to 50J/mole.K. The temperature rise after a conversion of 0.5 will be

20°C

10°C

100°C

5°C

20°C

10°C

100°C

5°C

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Chemical Reaction Engineering
Catalyst carriers

Inhibit catalyst poisoning

Have very high selectivity

Provide large surface area with a small amount of active material

Increase the activity of a catalyst

Inhibit catalyst poisoning

Have very high selectivity

Provide large surface area with a small amount of active material

Increase the activity of a catalyst

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Chemical Reaction Engineering
Design of heterogeous catalytic reactor involves consideration of __________ steps.

Neither A nor B

Only chemical

Only physical

Both A & B

Neither A nor B

Only chemical

Only physical

Both A & B

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Chemical Reaction Engineering
Brunaur, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates is not used to derive BET equation?

The adsorbed layer may be polymolecular in thickness and the heat of adsorption in each layer (except the first one) is involved in each of the evaporation process

Langmuir

None of these

There is no dynamic equilibrium between successive layer

The adsorbed layer may be polymolecular in thickness and the heat of adsorption in each layer (except the first one) is involved in each of the evaporation process

Langmuir

None of these

There is no dynamic equilibrium between successive layer

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Chemical Reaction Engineering

Chemical Reaction Engineering The rate constant of a chemical reaction increases by 100 times when the temperature is increased from 400 °K to 500 °K. Assuming transition state theory is valid, the value of E/R is

Chemical Reaction Engineering __________ catalytic reaction is involved in the thermal cracking of gas oil.

Chemical Reaction Engineering Catalyst carriers

Chemical Reaction Engineering Design of heterogeous catalytic reactor involves consideration of __________ steps.

Chemical Reaction Engineering Brunaur, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates is not used to derive BET equation?

Chemical Reaction Engineering
The rate constant of a chemical reaction increases by 100 times when the temperature is increased from 400 °K to 500 °K. Assuming transition state theory is valid, the value of E/R is

Chemical Reaction Engineering
__________ catalytic reaction is involved in the thermal cracking of gas oil.

Chemical Reaction Engineering
Catalyst carriers

Chemical Reaction Engineering
Design of heterogeous catalytic reactor involves consideration of __________ steps.

Chemical Reaction Engineering
Brunaur, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates is not used to derive BET equation?