It is desired to remove about $90\%$ of the A present in a gas stream by absorption in water which contains reactant B$.$ Chemicals A and B react in the liquid as $A(gl)+B(l)R(l)$ with $-r_A=k{C}_A{C}_B.B$ has a negligible vapor pressure, hence does not go into the gas phase. We plan to do this absorption in a packed bed column$($a$)$ What volume of contactor is needed? $($b$)$ Where does the resistance of absorption reaction lie? Additional Data: $C_U=56,000$mol water $\frac{?}{m^3}$ liquid at all $C_B,D=3\mathrm{.}6{10}^{-6}\frac{m^2}{?}hr,F_g=90,000mo\frac{l}{h}r,={10}^{5}Pa,p_{\text{A}\text{i}\text{n}}=1,000Pa,p_{\text{A}\text{o}\text{u}\text{t}}=100Pa,$ For Packed bed $-k_{Ag}a=0\mathrm{.}36mo\frac{l}{h}r*m^3.Pa,k_{Al}a=72h{r}^{-1},a=100\frac{m^2}{m^3},F_l=900,000mo\frac{l}{h}r,f_l=0\mathrm{.}08,C_{\text{B}\text{i}\text{n}}=56mo\frac{l}{m^3},$

For Agitated Tank $-k_{Ag}a=0\mathrm{.}72mo\frac{l}{h}r*m^3.Pa,k_{Al}a=144h{r}^{-1},a=200\frac{m^2}{m^3},F_l=9,000mo\frac{l}{h}r,f_l=0\mathrm{.}9,C_{Bin}=5556mo\frac{l}{m^3}$