A volume$-$stable reaction of the type: $A+BC$ with $r=k$ GAEin

is to be carried out in a cascade of three equally large stirred tanks at different

temperatures. The following data is given:

$V^{}$Ein$(1)8,640,*\frac{m^3}{H}$

$C{A}^{\text{E}\text{i}\text{n}(1)}=1\mathrm{.}2,\frac{\text{k}\text{m}\text{o}\text{l}}{m^{33}}$

$T^{(1)}=273K$;$,k^{(1)}=8,70*{10}^{-4}{s}^{-1}$

$T^{(2)}=283K$;$,k^{(2)}=1,43*{10}^{-3}{s}^{-1}$

$T^{(3)}=293K$;$,k^{(3)}=1,96*{10}^{-3}{s}^{-1}$

a$)$ How high must the individual boilers be if the diameter is $1\mathrm{.}2$

$m$ and a turnover of $0\mathrm{.}85$ is to be achieved?

b$)$ What changes if all boilers are operated isothermally at $293K?$