
Ashton F.
asked 09/13/22Mass Balance Diagram
I have a mass balance diagram where you're mixing sulfuric acid(40% concentrate) with sulfuric acid(90% concentrate) and it needs to be 250 lbm sulfuric acid with 98% concentrate. How do I do the equation to figure out the amount of strong and weak sulfuric acid I need?
1 Expert Answer
.98x + .4(250-x) = .9(250)
.98x -.4x = (.9-.4)250
.58x = .5(250) = 125
x = 125/.58 = about 215.5 = amount of 98%
250-215.5 = 34.5 = amount of 40%
check the answers
98-90=8
90-40 =50
50/8 = 25/4 = 6 1/4
you need 6 1/4 times as much 98% as 40%
215.5/34.5 = about 6 1/4
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William W.
Double check your question - you can't mix 40% with 90% and get 98% unless you boiled off the water or something09/13/22