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Ammonia, NH3, in air is being absorbed into water within the enclosed tank shown in the figure below. The liquid and gas phases are both well mixed, and mass transfer occurs only at the exposed gas-liquid interface. The diameter of the cylindrical tank is 4m,total liquid volume inside the tank is constant. The bulk gas pressure of ammonia is maintained at 0.02atm,and the total gas pressure is constant at 1.0atm.The system is isothermal at 20oC.The inlet volume flow rate of water is 200L/h and enters Nh3 free. You may assume Henry's law, pAi=HcAidescribes the equibrium distribution of NH3 between the gas and the liquid phases where H=0.02atm/(kgmol/m3).The film mass transfer coefficients are kG=1.25kgmol/m2. h. atm and kL=0.05kgmol/m2.h.(kgmol/m3). a) Develop a material balance for NH3;then determine cAi the concentration of NH3 in the outlet liquid stream.

Ammonia, NH3, in air is being absorbed into water within the enclosed tank shown in the figure below. The liquid and gas phases are both well mixed, and mass transfer occurs only at the exposed gas-liquid interface. The diameter of the cylindrical tank is 4m,total liquid volume inside the tank is constant. The bulk gas pressure of ammonia is maintained at 0.02atm,and the total gas pressure is constant at 1.0atm.The system is isothermal at 20oC.The inlet volume flow rate of water is 200L/h and enters Nh3 free. You may assume Henry's law, pAi=HcAidescribes the equibrium distribution of NH3 between the gas and the liquid phases where H=0.02atm/(kgmol/m3).The film mass transfer coefficients are kG=1.25kgmol/m2. h. atm and kL=0.05kgmol/m2.h.(kgmol/m3). a) Develop a material balance for NH3;then determine cAi the concentration of NH3 in the outlet liquid stream.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
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Ammonia, NH3, in air is being absorbed into water within the enclosed tank shown in the figure below. The liquid and gas phases are both well mixed, and mass transfer occurs only at the exposed gas-liquid interface. The diameter of the cylindrical tank is 4m,total liquid volume inside the tank is constant. The bulk gas pressure of ammonia is maintained at 0.02atm,and the total gas pressure is constant at 1.0atm.The system is isothermal at 20oC.The inlet volume flow rate of water is 200L/h and enters Nh3 free. You may assume Henry's law, pAi=HcAidescribes the equibrium distribution of NH3 between the gas and the liquid phases where H=0.02atm/(kgmol/m3).The film mass transfer coefficients are kG=1.25kgmol/m2. h. atm and kL=0.05kgmol/m2.h.(kgmol/m3).

a) Develop a material balance for NH3;then determine cAi the concentration of NH3 in the outlet liquid stream. 

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