For the liquid phase zero order irreversible reaction A → B, the conversion of A in a CSTR is found to be 0.3 at a space velocity of 0.1min⁻¹ . What will be the conversion for a PFR with a space velocity of 0.2 min⁻¹? Assume that all the other operating conditions are the same for CSTR and PFR.

Chemical Reaction Engineering
For the liquid phase zero order irreversible reaction A → B, the conversion of A in a CSTR is found to be 0.3 at a space velocity of 0.1min⁻¹ . What will be the conversion for a PFR with a space velocity of 0.2 min⁻¹? Assume that all the other operating conditions are the same for CSTR and PFR.

0.15

0.3

0.6

0.9

0.15

0.3

0.6

0.9

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Chemical Reaction Engineering
When a catalyst increases the rate of chemical reaction, the rate constant

Remains constant

Decreases

Becomes infinite

Increases

Remains constant

Decreases

Becomes infinite

Increases

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Chemical Reaction Engineering
Fluidised bed reactor is characterised by

Absence of continuous catalyst regeneration facility

Uniformity of temperature

Comparatively smaller equipment

Very small pressure drop

Absence of continuous catalyst regeneration facility

Uniformity of temperature

Comparatively smaller equipment

Very small pressure drop

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Chemical Reaction Engineering
A backmix reactor

Employs mixing in axial direction only

Is most suitable for gas phase reaction

Is same as ideal stirred tank reactor

Is same as plug-flow reactor

Employs mixing in axial direction only

Is most suitable for gas phase reaction

Is same as ideal stirred tank reactor

Is same as plug-flow reactor

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Chemical Reaction Engineering
With increase in temperature, the equilibrium conversion of a reversible exothermic reaction

Decreases

Increases

Remains unaffected

Decreases linearily with temperature

Decreases

Increases

Remains unaffected

Decreases linearily with temperature

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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)

ΔHA + ΔHR

E + ΔHA - ΔHR

E

E + ΔHA

ΔHA + ΔHR

E + ΔHA - ΔHR

E

E + ΔHA

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Chemical Reaction Engineering

Chemical Reaction Engineering When a catalyst increases the rate of chemical reaction, the rate constant

Chemical Reaction Engineering Fluidised bed reactor is characterised by

Chemical Reaction Engineering A backmix reactor

Chemical Reaction Engineering With increase in temperature, the equilibrium conversion of a reversible exothermic reaction

Chemical Reaction Engineering
When a catalyst increases the rate of chemical reaction, the rate constant

Chemical Reaction Engineering
Fluidised bed reactor is characterised by

Chemical Reaction Engineering
A backmix reactor

Chemical Reaction Engineering
With increase in temperature, the equilibrium conversion of a reversible exothermic reaction