A gas containing 2 percent A and 1 percent B is to be scrubbed with a solvent in which A is 5 times as soluble as B. Show that using two columns in series with separate regeneration of the liquid from each column would permit recovery of A and g in relatively pure form. Use a y–x diagram to show the equilibrium and operating lines for the simultaneous absorption of A and B. and estimate the ratio of A and B in the liquid from the first absorber.