QUESTION $1$

Answer ALL parts.

A mixture of $28\%N{O}_2$ and $72\%$ air is charged to a continuous flow reactor in which $N{O}_2$ is oxidised. Initial concentrations of $N{O}_2$ and $O_2($assuming air contains $21\%O_2)$ are $100m\frac{o}{l}$ and $54m\frac{o}{\frac{?}{?}}l$ respectively.

$2N{O}_2+O_{2}2N{O}_3$

a$)$ Set up a stoichiometric table in terms of symbols $($quantities going in$,$ being produced and coming out and the outlet concentration for each component and for the total$)$

$[50$ marks$]$

b$)$ Replace as many symbols as possible in the table developed in a$)$ by their value; Calculate the concentration of each species as a function of conversion.

$[20$ marks$]$

c$)$ If we have a vessel available with a volume of $10,000L$ and consider it perfectly mixed, what flowrate should we use to get a conversion of $80\%?$

$[30$ marks$]$