Chemical Reaction Engineering
The reaction A → B is conducted in an adiabatic plug flow reactor (PFR). Pure A at a concentration of 2 kmol/m³ is fed to the reactor at the rate of 0.01 m³ /s and at a temperature of 500 K. If the exit conversion is 20%, then the exit temperature (in k)is (Data: Heat of reaction at 298 K = - 50000 kJ/ kmole of A reacted Heat capacities CPA = CPB = 100kJ/kmole. K (may be assumed to be independent of temperature))

500
1000
400
600

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Chemical Reaction Engineering
In the reversible reaction of the type, A + B ⇋ AB, in general

The combination reaction will be endothermic, while the dissociation reaction will be exothermic
The combination reaction will be exothermic, while the dissociation reaction will be endothermic
Neither of the reactions will be en-dothermic
Both forward and backward reactions will be exothermic

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Chemical Reaction Engineering
A batch reactor is

Suitable for liquid phase reactions involving small production rate
Most suitable for very large production rate
Suitable for gas-phase reactions on commercial scale
Least expensive to operate for a given rate

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