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A feed containing equimolar amount of methanol and water is mixed with 15 moles of a 40 mol% aqueous methanol stream. The mixture enters a separation unit that creates two streams. A top stream exits that contains 65 mol% methanol and the rest water. The other stream, which is 70 moles, enters a second separation unit. A top stream exits the second unit as a 50% methanol/50% water mixture. The other stream is unknown. If the fresh feed to the system is 100 moles (the equimolar mixture) and the two top streams exiting the separation units have the same flow rate, find the mass flow rate and composition of the other stream exiting the second separation unit.

A feed containing equimolar amount of methanol and water is mixed with 15 moles of a 40 mol% aqueous methanol stream. The mixture enters a separation unit that creates two streams. A top stream exits that contains 65 mol% methanol and the rest water. The other stream, which is 70 moles, enters a second separation unit. A top stream exits the second unit as a 50% methanol/50% water mixture. The other stream is unknown. If the fresh feed to the system is 100 moles (the equimolar mixture) and the two top streams exiting the separation units have the same flow rate, find the mass flow rate and composition of the other stream exiting the second separation unit.

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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10:33 1 ull 4G A Ims.nbu.edu.sa Remaining Time: 2 hours, 59 minutes, 32 seconds. * Question Completion Status: 1 Q3) A feed containing equimolar amount of methanol and water is mixed with 15 moles of a 40 mol% aqueous methanol stream. The mixture enters a separation unit that creates two streams. A top stream exits that contains 65 mol% methanol and the rest water. The other stream, which is 70 moles, enters a second separation unit. A top stream exits the second unit as a 50% methanol/50% water mixture. The other stream is unknown. If the fresh feed to the system is 100 moles (the equimolar mixture) and the two top streams exiting the separation units have the same flow rate, find the mass flow rate and composition of the other stream exiting the second separation unit. Attach File Browse Local Files Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Close Window Save and Submit
Transcribed Image Text:10:33 1 ull 4G A Ims.nbu.edu.sa Remaining Time: 2 hours, 59 minutes, 32 seconds. * Question Completion Status: 1 Q3) A feed containing equimolar amount of methanol and water is mixed with 15 moles of a 40 mol% aqueous methanol stream. The mixture enters a separation unit that creates two streams. A top stream exits that contains 65 mol% methanol and the rest water. The other stream, which is 70 moles, enters a second separation unit. A top stream exits the second unit as a 50% methanol/50% water mixture. The other stream is unknown. If the fresh feed to the system is 100 moles (the equimolar mixture) and the two top streams exiting the separation units have the same flow rate, find the mass flow rate and composition of the other stream exiting the second separation unit. Attach File Browse Local Files Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Close Window Save and Submit
10:33 1 .ull 4G A Ims.nbu.edu.sa Remaining Time: 2 hours, 59 minutes, 46 seconds. a Question Completion Status: 1 Q1) Two streams enter a column. Stream 1 is 40 % A, the rest B. Stream 2 is 30 % A, and the rest C. two streams exit the column. The first is 100% A while the second is 20% B, 5% A, and the rest C. Write the mass balance for this system and solve the unknown variables if you assume all in mass fraction. Q2) A liquid-liquid extraction vessel is used to separate a solute (S) from water (W). The solute is transferred to an organic solvent (0) that is immiscible in water. Given the process diagram below, calculate the following: A) The organic solvent required to produce a water product containing 0.9% solute B) The fraction of the solute in the feed that is recovered in the organic solvent product mų = 100 kg/hr. m3 = 225 kg/hr. Xs3 Kg S/kg x03 Kg W/kg Xs1 = 0.14 kg S/kg mą Kg/hr. m, = Kg/hr x02= 1.0 kg 0/kg Xs3 = 0.009 kg S/kg Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Close Window Save and Submit
Transcribed Image Text:10:33 1 .ull 4G A Ims.nbu.edu.sa Remaining Time: 2 hours, 59 minutes, 46 seconds. a Question Completion Status: 1 Q1) Two streams enter a column. Stream 1 is 40 % A, the rest B. Stream 2 is 30 % A, and the rest C. two streams exit the column. The first is 100% A while the second is 20% B, 5% A, and the rest C. Write the mass balance for this system and solve the unknown variables if you assume all in mass fraction. Q2) A liquid-liquid extraction vessel is used to separate a solute (S) from water (W). The solute is transferred to an organic solvent (0) that is immiscible in water. Given the process diagram below, calculate the following: A) The organic solvent required to produce a water product containing 0.9% solute B) The fraction of the solute in the feed that is recovered in the organic solvent product mų = 100 kg/hr. m3 = 225 kg/hr. Xs3 Kg S/kg x03 Kg W/kg Xs1 = 0.14 kg S/kg mą Kg/hr. m, = Kg/hr x02= 1.0 kg 0/kg Xs3 = 0.009 kg S/kg Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Close Window Save and Submit
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