a. The aromatics are analysed and found to contain 33.2 mol% pseudocumene, 1 mol% diphenyl, 20 mol% benzene and 12.3 mol% toluene. What is the mole fraction of xylene in the aromatics stream?b. Determine the pressure (in bar) of ethylene glycol at 250 K if it has a density of 50 kg/m3. Use the van der Waals equation of state. Answer in 2 decimal places. Hydrodealkylationis a process in which sidechain alkyl groups (like methyl) are removed fromaromatics by reaction with hydrogen. Thefollowing reactions take place in the reactor:E1C6H5CH3 + H₂ → C6H6 + CH482C6H4 (CH3)2 + H₂ → C6H5CH3 + CH4€3C6H3(CH3)3 + H₂ → C6H4(CH3)2 + CH4In addition, an unwanted side reaction occurs, inwhich benzene dimerizes to form diphenyl[C6H5C6H5].2 C₂H₂C6H5C6H5 + H₂A process stream containing 5 mol % benzene[C6H6], 20 mol% toluene [C6H5CH3³], 35 mol%xylene [C6H4(CH3)2], and 40 mol%pseudocumene [C6H3(CH3)3] is fed to ahydrodealkylation plant. This process stream ismixed with hydrogen gas in 5:1 gas-aromaticsratio before being fed to the reactor. A condenserseparates hydrogen and methane from the otherreactor products (lumped as aromatics).Feed? B? T? X? P84ReactorHydrogen Gas? H₂Light Gases? H₂? MCondenserAromatics? B?T? X?P?D

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Answered: a. The aromatics are analysed and found…

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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Question

a. The aromatics are analysed and found to contain 33.2 mol% pseudocumene, 1 mol% diphenyl, 20 mol% benzene and 12.3 mol% toluene. What is the mole fraction of xylene in the aromatics stream?

b. Determine the pressure (in bar) of ethylene glycol at 250 K if it has a density of 50 kg/m3. Use the van der Waals equation of state. Answer in 2 decimal places.