
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: McGraw-Hill Education
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Question 1 is just the details and question 2 is what I need help with.

Transcribed Image Text:You mix 345 gallons of a mixture containing 4 wt% NaCl (sodium chloride) and 96 wt% water (solution
density = 1.0253 g/cm³) with an unknown volume of solution that is 26 wt% NaCl and 74 wt% water (solution
density = 1.1944 g/cm³). You want to produce a mixture containing 15 wt% NaCl. Find the volume of the
second feed solution by following the steps below.
Label the flow chart of the mixing process. Drag the labels below to fill in the spaces next to each quantity. If
you are not given a value for a quantity, place the word "unknown" in the space. DO NOT LEAVE ÁNY
SPACES EMPTY.
gallons
345
grams mixture
unknown
wt% NaCl
4
wt% water
96
unknown grams mixture
Mixer
wt% Naci
15
unknown gallons
unknown wt% water
unknown
grams mixture
26
wt% NaCl
unknown
74
wt% water

Transcribed Image Text:Which independent equations can you write to solve for the volume of the second feed solution. Check all
that apply.
Mass balance on water
Volume balance on NaCl
The sum of the weight fractions of the 26 wt% NaCl solution equals 1.
The density of the 4 wt% NaCl solution relates the solution mass to volume.
Volume balance on the total amount of fluid
Volume balance on water
The density of the 26 wt% NaCl solution relates the solution mass to volume.
Mass balance on NaCl
The sum of the weight fractions of the product solution equals 1.
The sum of the weight fractions of the 4 wt% NaCl solution equals 1.
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