A chemical plant produces an ammonia-rich waste gas that cannot be released as-is into the environment. One method to reduce the ammonia concentration in the waste gas is to bubble the waste gas through a liquid solvent. Components of the gas that are highly soluble, like ammonia, will dissolve into the liquid phase. Water is an appropriate liquid solvent for this process. The chemical plant produces 105.0 m/hr of waste gas (p = 0.0407 mol/L) initially having a mole fraction of 0.190 NH3, and wishes to remove 90.0% of the initial amount of NH3. The maximum concentration of ammonia in water at this temperature is 0.2000 mol NH3/ mol water. Neglect the absorption of other waste gas components into the water, and the evaporation of water into the waste gas stream. At what rate is NH3 being removed from the feed gas? Number mol/ hr What is the minimum flow rate of water (p = 0.990 g/mL) required to scrub out 90.0% of the incoming NH3? Number L/ hr What is the mole fraction of NH3 in the scrubbed waste gas stream? Number mol NH, mol waste gas
A chemical plant produces an ammonia-rich waste gas that cannot be released as-is into the environment. One method to reduce the ammonia concentration in the waste gas is to bubble the waste gas through a liquid solvent. Components of the gas that are highly soluble, like ammonia, will dissolve into the liquid phase. Water is an appropriate liquid solvent for this process. The chemical plant produces 105.0 m/hr of waste gas (p = 0.0407 mol/L) initially having a mole fraction of 0.190 NH3, and wishes to remove 90.0% of the initial amount of NH3. The maximum concentration of ammonia in water at this temperature is 0.2000 mol NH3/ mol water. Neglect the absorption of other waste gas components into the water, and the evaporation of water into the waste gas stream. At what rate is NH3 being removed from the feed gas? Number mol/ hr What is the minimum flow rate of water (p = 0.990 g/mL) required to scrub out 90.0% of the incoming NH3? Number L/ hr What is the mole fraction of NH3 in the scrubbed waste gas stream? Number mol NH, mol waste gas
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
Problem 1.1P
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Transcribed Image Text:A chemical plant produces an ammonia-rich waste gas that cannot be released as-is into the environment.
One method to reduce the ammonia concentration in the waste gas is to bubble the waste gas through a
liquid solvent. Components of the gas that are highly soluble, like ammonia, will dissolve into the liquid
phase. Water is an appropriate liquid solvent for this process.
The chemical plant produces 105.0 m/hr of waste gas (p = 0.0407 mol/L) initially having a mole fraction of
0.190 NH3, and wishes to remove 90.0% of the initial amount of NH3. The maximum concentration of
ammonia in water at this temperature is 0.2000 mol NH3/ mol water. Neglect the absorption of other waste
gas components into the water, and the evaporation of water into the waste gas stream.
At what rate is NH3 being removed from the feed gas?
Number
mol/ hr
What is the minimum flow rate of water (p = 0.990 g/mL) required to scrub out 90.0% of the incoming NH3?
Number
L/ hr
What is the mole fraction of NH3 in the scrubbed waste gas stream?
Number
mol NH,
mol waste gas
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