$3$ points

$0$The entering feed molar flow rate of $A,F_{AO}$ was $2\frac{\text{m}\text{m}\text{o}\text{l}}{\text{m}\text{i}\text{n}}.$

Hint: You may use the Trapezium Rule to find area under the graph.

$($a$)$ What is the CSTR volume required to achieve $60\%$ conversion?

$m^3$

$($b$)$ What is the PFR volume required to achieve $60\%$ conversion?

$m^3($c$)$ What is the required volume of the CSTR that must be added to the first CSTR$,$ in order to raise the conversion to $80\%?$

$m^3$

$($d$)$ What is the required volume of the PFR that must be added to the first CSTR$,$ in order to raise the conversion to $80\%?$

$m^3{m}^3$

$($e$)$ In terms of minimum volume, which is the optimal reaction system in order to achieve $80\%$ conversion?

A single CSTR

A single PFR

A series combination of $2$ CSTR$,$ as shown in $($c$)$

A series combination of CSTR followed by PFR$,$ as shown in $($d$)$