A, entering at C=1 mol/L, is reacted through an irreversible, first order reaction to products in the following reactor/separation scheme. Reaction first occurs in a CSTR, followed by a PFR. The stream leaving the PFR is separated, and a stream concentrated in reactant A is recycled back to the CSTR. Determine the minimum separation ratio (molar flow rate of A in recycle stream divided by molar flow rate of A in exit stream) required for the fractional conversion of A of the overall process to be at least 0.99. CA, Vo CSTR VCSTR PFR vo= 1 L/min VR = 5V0 VCSTR = 2 L VPFR = 4.15 L k = 1 min VPFR CAR, VR separator CA The reaction occurs at constant volume, steady-state, and the system is isothermal. The following parameters are given: