Chemical Reaction Engineering
The gas phase reaction 2A ⇋ B is carried out in an isothermal plug flow reactor. The feed consists of 80 mole % A and 20 mole % inerts. If the conversion of A at the reactor exit is 50%, then CA/CA0 at the outlet of the reactor is

43959
43833
43898
43864

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Chemical Reaction Engineering
For a first order isothermal chemical reaction in a porous catalyst, the effectiveness factor is 0.3. The effectiveness factor will increase if the

Catalyst size is reduced or the catalyst diffusivity is increased
Catalyst size is increased or the catalyst diffusivity is increased
Catalyst size is reduced or the catalyst diffusivity is reduced
Catalyst size is increased or the catalyst diffusivity is reduced

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Chemical Reaction Engineering
A space velocity of 5 hr⁻¹ means that

Cent per cent conversion can be achieved in at least 5 hours
Five reactor volumes of feed (at specified conditions) are being fed into the reactor per hour
After every 5 hours, reactor is being filled with the feed
A fixed conversion of a given batch of feed takes 5 hours

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