Mass+transfer+b+k+dutta+solutions+better File

An ammonia-air mixture is scrubbed with water in a packed tower at 293 K and 1 atm. The inlet gas contains 5% NH₃ by volume; outlet gas contains 0.1%. Water flow rate is 1.5 times minimum. Given ( k_G a = 0.12 ) kmol/m³·s, ( k_L a = 0.08 ) kmol/m³·s, and Henry’s constant ( H = 0.73 ) (atm/(mole fraction)). Calculate the packed height.

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