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
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?

None of these

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

There is no dynamic equilibrium between successive layer

Langmuir

None of these

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

There is no dynamic equilibrium between successive layer

Langmuir

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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?

1.6

2

2.24

2.5

1.6

2

2.24

2.5

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Chemical Reaction Engineering
Space velocity

Is the maximum feed rate pre unit volume of reactor for a given conversion

Describes the extensive operating characteristics of a tubular flow reactor

Is a measure of the ease of the reaction

All of these

Is the maximum feed rate pre unit volume of reactor for a given conversion

Describes the extensive operating characteristics of a tubular flow reactor

Is a measure of the ease of the reaction

All of these

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Chemical Reaction Engineering
Rate of a chemical reaction is not affected by the

Number of molecules of reactants taking part in the reaction

Temperature

Catalyst

Reactant's concentration

Number of molecules of reactants taking part in the reaction

Temperature

Catalyst

Reactant's concentration

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Chemical Reaction Engineering
If the time required for half change is inversely proportional to the square of initial concentration and the velocity depends on the units in which the concentration term is expressed, then the order of reaction is

0

2

3

1

0

2

3

1

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Chemical Reaction Engineering
Reactions with high activation energy are

Always irreversible

Temperature insensitive

Very temperature sensitive

Always reversible

Always irreversible

Temperature insensitive

Very temperature sensitive

Always reversible

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Chemical Reaction Engineering

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 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 Space velocity

Chemical Reaction Engineering Rate of a chemical reaction is not affected by the

Chemical Reaction Engineering If the time required for half change is inversely proportional to the square of initial concentration and the velocity depends on the units in which the concentration term is expressed, then the order of reaction is

Chemical Reaction Engineering Reactions with high activation energy are

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
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
Space velocity

Chemical Reaction Engineering
Rate of a chemical reaction is not affected by the

Chemical Reaction Engineering
If the time required for half change is inversely proportional to the square of initial concentration and the velocity depends on the units in which the concentration term is expressed, then the order of reaction is

Chemical Reaction Engineering
Reactions with high activation energy are