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gas mixture containing 5 mole% of propanone and 95 mole% of air is to be scrubbed with water flowing at 800 kmol h-1, in a packed tower. The water entering contains no propanone. The gas flow rate is 230 kmol h-1 and a recovery of 98% of the propanone in the gas is required. Evaporation of water into the gas can be neglected and the total molar flow rates of gas and water can be assumed to remain constant throughout the column. What is the mole fraction of propanone in the water leaving the tower?

gas mixture containing 5 mole% of propanone and 95 mole% of air is to be scrubbed with water flowing at 800 kmol h-1, in a packed tower. The water entering contains no propanone. The gas flow rate is 230 kmol h-1 and a recovery of 98% of the propanone in the gas is required. Evaporation of water into the gas can be neglected and the total molar flow rates of gas and water can be assumed to remain constant throughout the column. What is the mole fraction of propanone in the water leaving the tower?

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
Problem 1.1P
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A gas mixture containing 5 mole% of propanone and 95 mole% of air is to
be scrubbed with water flowing at 800 kmol h-1, in a packed tower.
The water entering contains no propanone. The gas flow rate is
230 kmol h-1 and a recovery of 98% of the propanone in the gas is
required. Evaporation of water into the gas can be neglected and the total
molar flow rates of gas and water can be assumed to remain constant
throughout the column.

What is the mole fraction of propanone in the water leaving the
tower?

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