A -> B homogeneous liquid phase reaction is carried out in a reactor system consisting of two equal volumes of CSTRs connected in series, followed by a PFR. The volume of each CSTR is 5 L, and the volume of the PFR is 7 L. Only substance A is present in the feed stream, with an initial concentration of 2.0 mol/L and a volumetric flow rate of 3.0 L/min. The reaction rate expression is -rA = (0.40 min^-1) * CA.
a) Calculate the A and B concentrations in the streams leaving the 1st CSTR, 2nd CSTR, and PFR.
b) Calculate the total conversion rate of A in the stream leaving the reactor system.