SOLUTION: how much pure acid should be mixed with 5 gallons of a 30% acid solution in order to get a 50% acid solution?

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Question 627310: how much pure acid should be mixed with 5 gallons of a 30% acid solution in order to get a 50% acid solution?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

how much pure acidhighlight%28x%29 should be mixed with 5 gallons of a 30% acid solution

in order to get a 50% acid solution?

    acid + acid = acid

 x+%2B++.30%2A5gal+=+.50%285%2Bx%29

            +.5x+=+.20%2A5

                  x = 2 gal



Note:  2gal + 1.5gal = 3.5gal                      

Set Up on ALL mixture problems is to have the same amount of the key ingredient on both sides of the EQ