Question 936976: How many ounces of pure acid should be added to 35 oz of 40% acid to make 70% acid solution? Found 2 solutions by josmiceli, lwsshak3:Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = ounces of pure acid to be added ounces of pure acid in 40%
solution
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35 ounces of pure acid needs to be added
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You can put this solution on YOUR website! How many ounces of pure acid should be added to 35 oz of 40% acid to make 70% acid solution?
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let x=amount of pure acid to add
40%*35+100%x=70%(35+x)
14+x=24.5+.70x
.30x=10.5
x=35
amount of pure acid to add=35 ounces
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