If the pore diffusion controls in a catalytic reaction, the apparent activation energy Ea is equal to

Chemical Reaction Engineering
If the pore diffusion controls in a catalytic reaction, the apparent activation energy Ea is equal to

ED/2

(E + ED)/2

(E + ED) where ED is activation due to diffusion

The intrinsic activation energy E

ED/2

(E + ED)/2

(E + ED) where ED is activation due to diffusion

The intrinsic activation energy E

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Chemical Reaction Engineering
The residence time distribution of an ideal CSTR is

1/τ (-t/τ)

1/τ exp (-t/τ)

Τ exp (-t/τ)

Exp(-t/τ)

1/τ (-t/τ)

1/τ exp (-t/τ)

Τ exp (-t/τ)

Exp(-t/τ)

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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

1

2

0

3

1

2

0

3

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Chemical Reaction Engineering
The reaction A → B is conducted in an isothermal batch reactor. If the conversion of A increases linearly with holding time, then the order of the reaction is

1

1.5

0

2

1

1.5

0

2

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Chemical Reaction Engineering
At a given temperature, K₁, K₂ and K3 are equilibrium constants for the following reactions 1, 2, 3 respectively. CH₄(g) + H₂O(g) ⇋ CO(g) + 3H₂(g), CO(g) + H₂O(g) ⇋ CO₂(g) + H₂(g) CH₄(g) + 2H₂O(g) ⇋ CO₂(g) + 4H₂(g) Then K₁, K₂ and K3 are related as:

K3 = K₁.K₂

K3(K₁+K₂)/2

K3 = (K₁.K₂)2

K3 = (K₁.K₂)0.5

K3 = K₁.K₂

K3(K₁+K₂)/2

K3 = (K₁.K₂)2

K3 = (K₁.K₂)0.5

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Chemical Reaction Engineering
For a heterogeneous catalytic reaction

The catalyst does not form an intermediate complex with the reactant

A relatively small amount of catalyst can cause the conversion of large amount of reactants which does not mean that catalyst concentration is important

The surface of the catalyst does not play an important role during reaction

Free energy of activation is lowered in the presence of catalyst, which remains unchanged at the end of reaction

The catalyst does not form an intermediate complex with the reactant

A relatively small amount of catalyst can cause the conversion of large amount of reactants which does not mean that catalyst concentration is important

The surface of the catalyst does not play an important role during reaction

Free energy of activation is lowered in the presence of catalyst, which remains unchanged at the end of reaction

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Chemical Reaction Engineering

Chemical Reaction Engineering If the pore diffusion controls in a catalytic reaction, the apparent activation energy Ea is equal to

Chemical Reaction Engineering The residence time distribution of an ideal CSTR is

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 The reaction A → B is conducted in an isothermal batch reactor. If the conversion of A increases linearly with holding time, then the order of the reaction is

Chemical Reaction Engineering For a heterogeneous catalytic reaction

Chemical Reaction Engineering
If the pore diffusion controls in a catalytic reaction, the apparent activation energy Ea is equal to

Chemical Reaction Engineering
The residence time distribution of an ideal CSTR is

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
The reaction A → B is conducted in an isothermal batch reactor. If the conversion of A increases linearly with holding time, then the order of the reaction is

Chemical Reaction Engineering
For a heterogeneous catalytic reaction