The rate of the heterogenous catalytic reaction A(g) + B(g) ? C(g) is given by -rA = k.KA.pA.PB/(1 + KA.PA + Kc.pc), where KA and Kc are the adsorption equilibrium constants. The rate controlling step for this reaction isA. absorption of A.

Chemical Reaction Engineering
The rate of the heterogenous catalytic reaction A(g) + B(g) ? C(g) is given by -rA = k.KA.pA.PB/(1 + KA.PA + Kc.pc), where KA and Kc are the adsorption equilibrium constants. The rate controlling step for this reaction isA. absorption of A.

Surface reaction between absorbed A and absorbed B

Absorption of A

Surface reaction between absorbed A and B in the gas phase

Surface reaction between A in the gas phase and absorbed B

Surface reaction between absorbed A and absorbed B

Absorption of A

Surface reaction between absorbed A and B in the gas phase

Surface reaction between A in the gas phase and absorbed B

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Chemical Reaction Engineering
Rate constant 'k' and absolute temperature 'T' are related by collision theory (for bimolecular) as

k ∝ T

k ∝ T1.5

k ∝ √T

k ∝ exp(-E/RT)

k ∝ T

k ∝ T1.5

k ∝ √T

k ∝ exp(-E/RT)

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Chemical Reaction Engineering
The rate expression for a heterogenous catalytic reaction is given by, - rA = K.KA PA(1 + KA.PA + Kr.PR), where K is surface reaction rate constant and KA and KR are absorption equilibrium constants of A and R respectively. If KR PR >> (1 + KA PA), the apparent activation energy EA is equal to (given E is the activation energy for the reaction and ΔHR and ΔHA are the activation energies of adsorption of R and A)

E + ΔHA - ΔHR

E + ΔHA

E

ΔHA + ΔHR

E + ΔHA - ΔHR

E + ΔHA

E

ΔHA + ΔHR

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Chemical Reaction Engineering
Collision theory gives the rate constant for bimolecular reaction as

K α eE/RT

K α e-E/RT

None of these

K α √T.e-E/RT

K α eE/RT

K α e-E/RT

None of these

K α √T.e-E/RT

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Chemical Reaction Engineering
Arrhenious equation represents graphically the variation between the __________ and temperature.

Activation energy

Rate constant

Rate of reaction

Frequency factor

Activation energy

Rate constant

Rate of reaction

Frequency factor

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Chemical Reaction Engineering
Half life period of decomposition of a liquid 'A' by irreversible first order reaction is 12 minutes. The time required for 75% conversion of 'A' is __________ minutes.

18

24

6

12

18

24

6

12

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Chemical Reaction Engineering

Chemical Reaction Engineering The rate of the heterogenous catalytic reaction A(g) + B(g) ? C(g) is given by -rA = k.KA.pA.PB/(1 + KA.PA + Kc.pc), where KA and Kc are the adsorption equilibrium constants. The rate controlling step for this reaction isA. absorption of A.

Chemical Reaction Engineering Rate constant 'k' and absolute temperature 'T' are related by collision theory (for bimolecular) as

Chemical Reaction Engineering Collision theory gives the rate constant for bimolecular reaction as

Chemical Reaction Engineering Arrhenious equation represents graphically the variation between the __________ and temperature.

Chemical Reaction Engineering Half life period of decomposition of a liquid 'A' by irreversible first order reaction is 12 minutes. The time required for 75% conversion of 'A' is __________ minutes.

Chemical Reaction Engineering
The rate of the heterogenous catalytic reaction A(g) + B(g) ? C(g) is given by -rA = k.KA.pA.PB/(1 + KA.PA + Kc.pc), where KA and Kc are the adsorption equilibrium constants. The rate controlling step for this reaction isA. absorption of A.

Chemical Reaction Engineering
Rate constant 'k' and absolute temperature 'T' are related by collision theory (for bimolecular) as

Chemical Reaction Engineering
Collision theory gives the rate constant for bimolecular reaction as

Chemical Reaction Engineering
Arrhenious equation represents graphically the variation between the __________ and temperature.

Chemical Reaction Engineering
Half life period of decomposition of a liquid 'A' by irreversible first order reaction is 12 minutes. The time required for 75% conversion of 'A' is __________ minutes.