For the following elementary aqueous phase reactions $(D$ is a desired product and $U$ is

undesired$)$

$A{k}_{1}D$

$A{k}_{2}U$

$D{k}_{3}U$

Write down the expression for instantaneous selectivity to $D(S_D)$ and $U(S_U).$

If $k_1=10k_2$ and $k_1=2k_3,$ and we start the reaction with pure liter For the following elementary aqueous phase reactions $(D$ is a desired product and $U$ is

undesired$)$

$A{k}_{1}D$

$A{k}_{2}U$

$D{k}_{3}U$

Write down the expression for instantaneous selectivity to $D(S_D)$ and $U(S_U).$

If $k_1=10k_2$ and $k_1=2k_3,$ and we start the reaction with pure liter