The liquid phase reaction

A $+$ B $->$ P

is to be carried out in a continuous flow reactor. Calculate both the CSTR and PFR volumes necessary to

consume $98\%$ of A when the entering volumetric flow rate is $380$ Liter$/$min$,$ assuming kinetic rate law for

this reaction is

$-$ rA$=180$ CA CB $($mol$/$Liter$.$min$)$

The feed contains $90$ mmol A$/$Liter and $180$ mmol B$/$Liter$.$