4742Chemical EngineeringMedium
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________?
Ad(VCA)/dt = -FCA – kCA2V
Bd(VCA)/dt = FCAF – kCA2V
Cd(VCA)/dt = -F (CAF – CA) – kCA2V
Correct answer
B. d(VCA)/dt = FCAF – kCA2V
Explanation
The correct answer is d(VCA)/dt = FCAF – kCA2V.