19. An aqueous solution of ethanol containing 10% by weight ethanolis continuously distilled at a rate of 1000 kg/h in a distillation column.Ten percent of the feed is recovered as distillate product whichcontains 60% ethanol and 40% water. Calculate the weight of alcohollost in the bottom producta. 40 kgb. 60 kgc. 80 kgd. 20 kge. none of theserol

Given that, The mass flow rate of feed F = 1000 kg/h The weight fraction of ethanol in the feed xe,F…

Answered: 19. An aqueous solution of ethanol…

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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Feed stream containing 15% wt solids and 85% wt water is introduced in a certain process where the solids are being crushed. The crushed solids and preservatives are mixed in a 4:5 mass ratio and the mixture is heated to evaporate water. The residue has 1/3 water by mass. a. Determine the degree of freedom. b. Calculate the amount (in grams) of the evaporated water after producing 100 g of the product residue. c. Calculate the amount (in grams) of the feed stream after producing 100 g of the product residue.
NaCl crystal is created from seawater within a series of evaporation and crystallization. A feed of 10 tons/hr of seawater containing 3.6% NaCl was mixed with a recycled stream of saturated brine solution at 40 Celcius before being fed to an evaporator where it is heated to 120 Celcius. The concentrated brine solution produced from the evaporator is 54% NaCl. This brine solution was fed to a crystallizer where it was cooled down to 40 Celcius to crystallize the NaCl. The crystals produced are 96.5% NaCl. The excess saturated liquor was mixed to the fresh seawater for recycle. The solubility of NaCl at 40 Celcius is 0.366 kg of water (H2O). Calculate: NaCI Crystals + H,0 Saturated Crystallizer Brine at 40°C Evaporator Mixer Seawater Concentrated Brine at 120°C Water Vapor a) crystals production rate kg/hr b) concentrated brine solution in kg/hr c) recycle stream flow rate in kg/hr
A feed stream containing 15% wt solids and 85% wt water is introduced in a certain process where the solids are being crushed. The crushed solids and preservatives are mixed in a 4:5 mass ratio and the mixture is heated to evaporate water. The residue has 1/3 water by mass. how many unknowns are to be solved? A 1 B 2 none of these
The waste acid from a nitrating process contains 21 % HNO3, 55% H2SO4 and 24% H2O. This acid is to be concentrated to contain 28% HNO3 and 62% H2SO4 by the addition of concentrated sulfuric acid containing 93% H2SO4 and concentrated nitric acid containing 90% HNO3. Calculate the weights of concentrated acids used and mixed acid formed from 1000 kg of waste acid.
Aqueous hydrochloric acid (HCI) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium chloride (NaCl) and liquid water (H₂O). If 4.14 g of water is produced from the reaction of 18.6 g of hydrochloric acid and 26.1 g of sodium hydroxide, calculate the percent yield of water. Round your answer to 3 significant figures. 3 X S
1. 1100 kg/h of a mixture containing equal parts by mass of methanol and water is distilled. Product streams leave the top and the bottom of the distilling column. The flow rate of the bottom stream is measured and found to be 710 kg/h, and the overhead stream is analyzed and found to contain 95.5 wt% methanol. Calculate the molar flow rates of methanol and water in the bottom product stream both in kmol/hour. Round your answers into 2 decimal places. Use 18 g/mol and 32 g/mol as the molecular weights of water and methanol respectively for the calculations.
Q1. A liquor of 0.30 mole fraction of benzene and the rest toluene is fed to a continuous still (distillation column) to give a top product of 0.90 mole fraction benzene and a bottom product of 0.95 mole fraction toluene. If the reflux ratio is 5.0, how many plates are required: (a) if the feed is saturated vapour? (b) if the feed is saturated liquid? Mole fraction of benzene in liquid 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 Mole fraction of benzene in 0.22 0.38 0.51 0.63 0.7 0.78 0.85 0.91 0.96 vapour
"The coronavirus disease (COVID-19) is an infectious disease caused by a new strain of coronavirus. This new virus and disease were unknown before the outbreak began in Wuhan, China, in December 2019. On 30 January 2020, the Philippine Department of Health reported the first case of COVID-19 in the country with a 38-year-old female Chinese national. On 7 March, the first local transmission of COVID-19 was confirmed. WHO is working closely with the Department of Health in responding to the COVID-19 outbreak." Aki and her family were alarmed with the news they watched and so first thing in the morning they rush to the nearest convenient store to secure disinfectant and sanitizers but unfortunately the store already had empty shelves of the essentials they needed. They went to other stores searching and to their dismay they acquired nothing. They were on their way home when she suddenly remembered her past lesson on "solutions", and so she immediately ran back to the store and purchase…
10. A container is separated into two halves by a membrane. Your lab partner assistant, Thurmond, is supposed to place a MgCl2 solution on side 1 and a NaCl solution on side 2. He is then supposed to measure the rate of water movement across the membrane. Unfortunately, Thurmond is not very good about keeping complete lab notes and he has forgotten to write down some data and calculations. Using your knowledge of osmosis, complete the following table. Temperature is 15°C and the hydraulic conductivity for the membrane is 0.4 ml/atm sec. MgCl2 Concentration on Side 1 NaCl Concentration on Side 2 80 mM Osmolarity on Side 1 Osmolarity on Side 2 Difference in osmotic pressure 60 mosM across the membrane Jy 0.95 ml/sec Reflection coefficient (ơ) Direction of water movement
Two aqueous NaOH streams are combined. Stream A is 26% NaOH by mole. Stream B is 69% NaOH by mole. The product (combined) stream has a flow rate of 125 lbmole/h and is 57% NaOH by mole. Determine the flow rate of stream A and stream B (lbmole/h).
A brine solution containing 20.00% NaCl by mass is mixed with a weaker solution containing 0.66% NaCl. Determine the mass flow rate of the product if 11.5 kg/h of the 20.00% NaCl solution is used. The product exits at 6.23% NaCl. Answer in kg/h, 2 decimal places.
Solve!

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