Ammonia is stripped from a dilute aqueous solution by countercurrent contact with air in a column containing seven sieve trays. The equilibrium relationship is ye=0.8xe and when the molar flow of air is 1.5 times that of the solution, 90 percent of the ammonia is removed. (a) How many ideal stages does the column have, and what is the stage efficiency? (b) What percentage removal would be obtained if the air rate were increased to 2.0 times the solution rate ? Nreal=7ye=0.8xeV=1.5L 1.In example 20.2, calculate the number of ideal plate by Kremser Eq. in y form