SOLUTION: 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?
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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
-------------------------------------
(1)
(2)
-----------------------------
(2)
(2)
(2)
-------------------------
Multiply both sides of (1) by
and subtract (1) from (2)
(2)
(1)
-------------------------
and
(1)
(1)
(1)
----------------
50 ml of 60% solution and
150 ml of 80% solution are needed
---------------------
check:
(2)
(2)
(2)
(2)
(2)
OK
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