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1. In a continuous process, 100 lbm of wet air per minute containing 0.02 lbm of water vapor per pound of dry air enters a chamber where water vapor is added to the air. The air leaving the chamber contains 0.05 lbm of water vapor per pound of dry air. Calculate the amount of water added to the initial wet air per minute. 2. A mixture containing 30% by mass HNO3, 40% by mass H2SO4, and 30% by mass water is to be made continuously by mixing concentrated H2SO4 (98% by mass H2SO4, and 2% H2O), concentrated HNO3 (90% by mass HNO3, and 10% by mass H2O) and waste acid (20% by mass H2SO4, 75% by mass H₂O and 5% by mass HNO3). Calculate the pounds of concentrated H2SO4, concentrated HNO3, and waste acid necessary per 1000 lbm of final mixture.

1. In a continuous process, 100 lbm of wet air per minute containing 0.02 lbm of water vapor per pound of dry air enters a chamber where water vapor is added to the air. The air leaving the chamber contains 0.05 lbm of water vapor per pound of dry air. Calculate the amount of water added to the initial wet air per minute. 2. A mixture containing 30% by mass HNO3, 40% by mass H2SO4, and 30% by mass water is to be made continuously by mixing concentrated H2SO4 (98% by mass H2SO4, and 2% H2O), concentrated HNO3 (90% by mass HNO3, and 10% by mass H2O) and waste acid (20% by mass H2SO4, 75% by mass H₂O and 5% by mass HNO3). Calculate the pounds of concentrated H2SO4, concentrated HNO3, and waste acid necessary per 1000 lbm of final mixture.

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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1. In a continuous process, 100 lbm of wet air per minute containing 0.02 lbm of water vapor per pound of dry air enters a chamber where water vapor is added to the air. The air leaving the chamber contains 0.05 lbm of water vapor per pound of dry air. Calculate the amount of water added to the initial wet air per minute. 2. A mixture containing 30% by mass HNO3, 40% by mass H2SO4, and 30% by mass water is to be made continuously by mixing concentrated H2SO4 (98% by mass H2SO4, and 2% H2O), concentrated HNO3 (90% by mass HNO3, and 10% by mass H2O) and waste acid (20% by mass H2SO4, 75% by mass H₂O and 5% by mass HNO3). Calculate the pounds of concentrated H2SO4, concentrated HNO3, and waste acid necessary per 1000 lbm of final mixture.
Transcribed Image Text:1. In a continuous process, 100 lbm of wet air per minute containing 0.02 lbm of water vapor per pound of dry air enters a chamber where water vapor is added to the air. The air leaving the chamber contains 0.05 lbm of water vapor per pound of dry air. Calculate the amount of water added to the initial wet air per minute. 2. A mixture containing 30% by mass HNO3, 40% by mass H2SO4, and 30% by mass water is to be made continuously by mixing concentrated H2SO4 (98% by mass H2SO4, and 2% H2O), concentrated HNO3 (90% by mass HNO3, and 10% by mass H2O) and waste acid (20% by mass H2SO4, 75% by mass H₂O and 5% by mass HNO3). Calculate the pounds of concentrated H2SO4, concentrated HNO3, and waste acid necessary per 1000 lbm of final mixture.
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