SOLUTION: a laboratory needs to make 135 litter batch of a 20% acid solution. How can the laboratory combine a batch of acid solution the is pure acid with another that is 10%to get the des
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Question 713127: a laboratory needs to make 135 litter batch of a 20% acid solution. How can the laboratory combine a batch of acid solution the is pure acid with another that is 10%to get the desired concentration Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = liters of pure acid needed
Let = liters of 10% solution needed = liters of pure acid in 10% solution
-------------
(1)
(2)
-------------------------
(2)
(2)
(2)
Subtract (1) from (2)
(2)
(1)
and, since
(1)
(1)
(1)
(1)
15 liters of pure acid are needed
120 liters of 10% solution are needed
check:
(2)
(2)
(2)
(2)
(2)
OK
