: An aqueous acetic anhydride

solution is continuously hydrolysed at $25\backslash$deg C$.$ It is an reaction of pseudo$-$first order. At

this temperature, the volume specific reaction rate is described by the following

equation:

rV $=2\mathrm{.}63310-31/$s $$ cAnhydride $($given in kmol$/$m$^3)$

The volume flow rate of the feed is $8\mathrm{.}3310-4$ m$^3/$s with an anhydride concentration of

$0\mathrm{.}15$ kmol$/$m$^3.$

Five ideal reactors are available for reaction control:

$-$ one stirred tank with a volume of $0\mathrm{.}5$ m$^3,$

$-$ two stirred tanks with a volume of $0\mathrm{.}25$ m$^3,$

$-$ one flow tube with a volume of $0\mathrm{.}5$ m$^3$ and

$-$ one flow tube with a volume of $0\mathrm{.}25$ m$^3.$

The turnover is to be calculated for the following arrangements:

$-$ single stirred tank with $0\mathrm{.}5$ m$^3,$

$-$ parallel connection of the two stirred tanks with $0\mathrm{.}25$ m$^3($equal split of feed$),$

$-$ serial connection of the two stirred tanks with $0\mathrm{.}25$ m$^3,$

$-$ single flow tube with $0\mathrm{.}5$ m$^3$ and

$-$ Combination of stirred tank $0\mathrm{.}25$ m$^3$ and downstream flow pipe $0\mathrm{.}25$ m$^3$