PLEASE SOLVE:$90\%$ of Ammonia is stripped from a $5$ mole$\%$ dilute aqueous solution by countercurrent contact

with pure $($ammonia free$)$ air. The equilibrium relationship is $y=0\mathrm{.}8x.$ The molar flow rate of air is $1\mathrm{.}5$

times that of the ammonia solution. This process is carried out in a real column with $10$ plates. The

process is operated at a total pressure of $101\mathrm{.}3$kPa.

a$.$ Draw a process diagram and show all flow streams with the corresponding compositions

b$.$ Draw the equilibrium and operating lines.

c$.$ Using the graphical method, calculate the number of ideal stages in this absorption column.

What is the real column's efficiency?

d$.$ Using the Kremser equation, calculate the number of ideal stages in this absorption column.