A gas mixture contains 2 mol % ethane (1) and 98 mol % nitrogen (2). The ethane is to be recovered by absorption into heavy oil at 40°C and 50 bar. When this gas mixture is in equilibrium with the oil, what is the relative volatility a,i of nitrogen to ethane? a21 X2Y1 Problems 20 Data, all at 40°C, are as follows: Henry's constant for nitrogen in the oil: 1000 bar Henry's constant for ethane in the oil: 100 bar Second virial coefficients (cm³ mol-!): B11 = -172; B22 = -1.5; B12 Partial molar volumes in the oil (cm³ mol-): nitrogen, 25; ethane, 60. -44.
A gas mixture contains 2 mol % ethane (1) and 98 mol % nitrogen (2). The ethane is to be recovered by absorption into heavy oil at 40°C and 50 bar. When this gas mixture is in equilibrium with the oil, what is the relative volatility a,i of nitrogen to ethane? a21 X2Y1 Problems 20 Data, all at 40°C, are as follows: Henry's constant for nitrogen in the oil: 1000 bar Henry's constant for ethane in the oil: 100 bar Second virial coefficients (cm³ mol-!): B11 = -172; B22 = -1.5; B12 Partial molar volumes in the oil (cm³ mol-): nitrogen, 25; ethane, 60. -44.
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 gas mixture contains 2 mol % ethane (1) and 98 mol % nitrogen (2). The ethane is to be
recovered by absorption into heavy oil at 40°C and 50 bar. When this gas mixture is in
equilibrium with the oil, what is the relative volatility a, ; of nitrogen to ethane?
7.
a21
Problems
20
Data, all at 40°C, are as follows:
Henry's constant for nitrogen in the oil: 1000 bar
Henry's constant for ethane in the oil: 100 bar
Second virial coefficients (cm³ mol-!): B,1 = -172; B22
Partial molar volumes in the oil (cm3 mol-): nitrogen, 25; ethane, 60.
-1.5; B12 = -44.
= -
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