A second order liquid phase reaction, A → B, is carried out in a mixed flow reactor operated in semi batch mode (no exit stream). The reactant A at concentration CAF is fed to the reactor at a volumetric flow rate of F. The volume of the reacting mixture is V and the density of the liquid mixture is constant. The mass balance for A is_______________________?
(A) d(VCA)/dt = -F (CAF – CA) – kCA2V
(B) d(VCA)/dt = F (CAF – CA) – kCA2V
(C) d(VCA)/dt = -FCA – kCA2V
(D) d(VCA)/dt = FCAF – kCA2V
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