For the following reactive systems, develop a selectivity expression for each set of reactions, identify the

optimal reactor type, and if a high or low temperature should be utilized to maximize selectivity of

formation of $D$ over $U$ as well as maximize the overall production rate of $D.$ Justify your choice of

reactor in terms of high or low relative concentration of reactants and$/$or products as well as single pass

and overall conversion.

a$)$

$A+BD,-r_{1A}=300$exp$(-\frac{500}{T})C_A$

$B+DU,-r_{2D}=700$exp$(-\frac{200}{T})C_B{C}_D$

b$)$

$A+BD$

$A+B{U}_1$

$A+B{U}_2$

$-r_{1A}=10$exp$(-\frac{700}{T})C_A^2{C}_B$

$-r_{2A}=3$exp$(-\frac{800}{T})C_A{C}_B$

$-r_{3A}=0\mathrm{.}5$exp$(-\frac{900}{T})C_A^3{C}_B$