Q$2.$ A liquid phase chemical reaction $AR$ is carried out in a MFR under SS condition. A side

product $S$ is also formed in the parallel reaction $AS.$ The following data are measured under

different conditions:

The same reaction as above is now performed in a MFR followed by PFR$.$ The volumetric

flowrate of feed is $1\frac{m^3}{m}in.$ The concentration of $A$ in the feed is $6$mole$\frac{s}{m^3}.$ The required

concentration of $A$ at the exit of the PFR is $0\mathrm{.}5$mole$\frac{s}{m^3}.$