Problem 22.5-3 of the text (pg 688) Absorption of Ammonia in a Tray Tower (30 pts)

A tray tower is to be used to remove 99% of ammonia from an entering air stream containing 6% (molar) ammonia at 293 K and 1.013 x 105 Pa. The entering pure-water flow rate is 188 kg H2 O/(hm 2 ) and the inert air flow is 128 kg air/(hm 2 ). a) Calculate the number of theoretical trays needed using a graphical approach. b) Calculate the number of theoretical trays using the analytical approach, and compare to part a.

Solve with graphical approach please