A wetted-wall tower is used to ‘‘aerate’’ water using air at 2.0 atm total system pressure and 20⁰C. The molar composition of air is 21% O2, 78% N2, and 1% other gases. At 20⁰C, the Henry’s law constant for dissolution of oxygen in water is 40,100 atm, and the mass density of liquid water is 1000 kg/m3 What is the maximum mole fraction of oxygen that could be dissolved in the water? What is the maximum molar concentration of oxygen that could be dissolved in the water? If the total system pressure increases, will the dissolved oxygen concentration in the water (1) increase; (2) decrease; or (3) stay the same?
A wetted-wall tower is used to ‘‘aerate’’ water using air at 2.0 atm total system pressure and 20⁰C. The molar composition of air is 21% O2, 78% N2, and 1% other gases. At 20⁰C, the Henry’s law constant for dissolution of oxygen in water is 40,100 atm, and the mass density of liquid water is 1000 kg/m3 What is the maximum mole fraction of oxygen that could be dissolved in the water? What is the maximum molar concentration of oxygen that could be dissolved in the water? If the total system pressure increases, will the dissolved oxygen concentration in the water (1) increase; (2) decrease; or (3) stay the same?
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 wetted-wall tower is used to ‘‘aerate’’ water using air at 2.0 atm total system pressure and 20⁰C. The molar composition of air is 21% O2, 78% N2, and 1% other gases. At 20⁰C, the Henry’s law constant for dissolution of oxygen in water is 40,100 atm, and the mass density of liquid water is
1000 kg/m3
- What is the maximum mole fraction of oxygen that could be dissolved in the water?
- What is the maximum molar concentration of oxygen that could be dissolved in the water?
- If the total system pressure increases, will the dissolved oxygen concentration in the water (1) increase; (2) decrease; or (3) stay the same?
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