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1. We wish to produce a product B from a reactant A in a PFR with...

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Chemistry

1. We wish to produce a product B from a reactant A in a PFRwith Q = 4 L/min and CA0 = 2 mol/L. However, another reaction isalso occurring, forming an undesired product C. (Both reactions areirreversible, 1st order, with kB= 0.5 min-1 and kC = 0.1 min-1)

. Assuming parallel reactions A -> B and A -> C, calculatethe reactor volume necessary to achieve

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3.8 Ratings (422 Votes)

As it is parallel reactions A -> B and A ->  C

The rate of the reaction = - -rA->B + ( -rA->C) = -kB [2M] - kC [2M]

                                                  -r       = 0.6 [2] mole/L.sec

                                                             = 1.2 mole/L.sec

                                                   -1/rA = 0.833 mole/L.sec

We know the formula for total required volume = Q x CA0 / -rA = 4 L/ 60 sec x 2 M / 0.833 mole/L.sec  = 0.16 L
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