Question 988394: a 200 ml 75% hydrochloric acid solution is to be made by mixing a 60% and 80% solution. how much of each solution should be used? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = ml of 60% solution needed
Let = ml of 80% solution needed = ml of acid in 60% solution = ml of acid in 80% solution
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(1)
(2)
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(2)
(2)
(2)
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Multiply both sides of (1) by
and subtract (1) from (2)
(2)
(1)
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and
(1)
(1)
(1)
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50 ml of 60% solution and
150 ml of 80% solution are needed
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check:
(2)
(2)
(2)
(2)
(2)
OK
