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?

2.5

1.6

2.24

2

2.5

1.6

2.24

2

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Chemical Reaction Engineering
A Catalyst

Changes the equilibrium constant of the reaction

Increases the equilibrium concentration of the product

None of these

Shortens the time to reach the equilibrium

Changes the equilibrium constant of the reaction

Increases the equilibrium concentration of the product

None of these

Shortens the time to reach the equilibrium

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Chemical Reaction Engineering
The half life period of a first order reaction is

Always the same irrespective of the reaction

Proportional to the initial concentration of reactants

Half the specific rate constant

Dependent on initial concentration of the reactants

Always the same irrespective of the reaction

Proportional to the initial concentration of reactants

Half the specific rate constant

Dependent on initial concentration of the reactants

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

Reactants concentration

Catalyst

Number of molecules of reactants taking part in a reaction

Temperature

Reactants concentration

Catalyst

Number of molecules of reactants taking part in a reaction

Temperature

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Chemical Reaction Engineering
The effectiveness factor for large value of Thiele modulus (L√(K/D1)) of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D1 = diffusion co-efficient, cm²/second)

1/(L√(K/D1))

∞

1

L√(K/D1)

1/(L√(K/D1))

∞

1

L√(K/D1)

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Chemical Reaction Engineering
A first order reaction is to be treated in a series of two mixed reactors. The total volume of the two reactors is minimum, when the reactors are

Of such size that the ratio of their volumes is < 5

Of different sizes

None of these

Equal in size

Of such size that the ratio of their volumes is < 5

Of different sizes

None of these

Equal in size

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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 A Catalyst

Chemical Reaction Engineering The half life period of a first order reaction is

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

Chemical Reaction Engineering The effectiveness factor for large value of Thiele modulus (L√(K/D1)) of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D1 = diffusion co-efficient, cm²/second)

Chemical Reaction Engineering A first order reaction is to be treated in a series of two mixed reactors. The total volume of the two reactors is minimum, when the reactors are

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
A Catalyst

Chemical Reaction Engineering
The half life period of a first order reaction is

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

Chemical Reaction Engineering
The effectiveness factor for large value of Thiele modulus (L√(K/D1)) of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D1 = diffusion co-efficient, cm²/second)

Chemical Reaction Engineering
A first order reaction is to be treated in a series of two mixed reactors. The total volume of the two reactors is minimum, when the reactors are