SOLUTION: a chemist has 20 liters of a 10% acid solution.How many liters of pure acid must be added to produce a 25% acid solution?
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Question 641515: a chemist has 20 liters of a 10% acid solution.How many liters of pure acid must be added to produce a 25% acid solution?
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
a chemist has 20 liters of a 10% acid solution.How many liters of pure acid must be added to produce a 25% acid solution?
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let x=amt of pure acid must be added to produce a 25% acid solution
x+20=amt of 25% acid solution
..
10%*20+100%x=25%(x+20)
2+x=.25x+5
.75x=3
x=3/.75=4
amt of pure acid must be added to produce a 25% acid solution=4 liters
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