An elementary irreversible reaction $AB+C$ is carried out adiabatically in a flow reactor with negligible shaft work. The feed reactant enters at a temperature of $350K$ with volumetric flow rate of $20d\frac{m^3}{s}.$ If the initial concentration of the reactant is $2mo\frac{l}{d}{m}^3$ and $k=0\mathrm{.}02s^{-1}$

A$.$ Assuming liquid phase reaction, find volume of CSTR to achieve conversion of $70\%$

$(1$P$)$

B$.$ Find the volume of PFR for a gas$-$phase reaction with no pressure drop to achieve similar conversion of $70\%.$

$(2$P$)$

C$.$ What volume of PFR obtained if you reduce further the volumetric flowrates to $5d\frac{m^3}{s}$ and how it's compared to CSTR volume in Q$1.$

Additional Information:

$\backslash$table$[[Cp{A}_p=20c\frac{a}{m}$olK,$HA=-20,000ca\frac{l}{m}ol$