Question 1073080: What quantity of 75 percent acid solution mist be mixed with a 30 percent solution to produce 1080ml of a 50 percent solution? Found 2 solutions by josgarithmetic, ikleyn:Answer by josgarithmetic(39617) (Show Source):
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What quantity of 75 percent acid solution mist be mixed with a 30 percent solution to produce 1080 mL of a 50 percent solution?
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Let V be the volume of the 75% acid solution to be mixed.
Then the volume of the 30% solution must be 1080 mL.
Your governing equation is the concentration equation
= 0.5.
Simplify and solve it:
0.75V + 324 - 0.3V = 0.5*1080,
0.45V = 540 - 324 ---> 0.45V = 216 ---> V = = 480 mL.
Answer. 480 mL of the 75% solution must be mixed with 1080-480 = 600 mL of the 50% solution.
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