The gas stream from a chemical reactor contains 25 mol % ammonia and the rest are inert gases. The total flow is 181.4 kg mol/h to an absorption tower at 303 K and 1.013 × 105 Pa pressure, where water containing 0.005 mol frac ammonia is the scrubbing liquid. The outlet gas concentration is to be 2.0 mol % ammonia. What is the minimum flow L min ⁡ ′ Using 1.5 times the minimum, plot the equilibrium and operating lines. Ans. L min ⁡ ′ = 262.6kg mol/h