A gas mixture contains 2 mol % ethane (1) and 98 mol % nitrogen (2). The ethane is to berecovered by absorption into heavy oil at 40°C and 50 bar. When this gas mixture is inequilibrium with the oil, what is the relative volatility a, ; of nitrogen to ethane?7.a21Problems20Data, all at 40°C, are as follows:Henry's constant for nitrogen in the oil: 1000 barHenry's constant for ethane in the oil: 100 barSecond virial coefficients (cm³ mol-!): B,1 = -172; B22Partial molar volumes in the oil (cm3 mol-): nitrogen, 25; ethane, 60.-1.5; B12 = -44.= -

Answered: A gas mixture contains 2 mol % ethane…

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 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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$G i v e n : H e n r y' s c o n s \tan t f o r n i t r o g e n i n t h e o i l = 1000 b a r H e n r y' s c o n s \tan t f o r e t h a n e i n t h e o i l = 100 b a r$

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