SOLUTION: a chemist wants to obtain 80 liters of a solution that is 12% hydrochloric acid. how many liters of 10% and 20% hydrochloric acid solutions should he mix to do so?

Question 742036: a chemist wants to obtain 80 liters of a solution that is 12% hydrochloric acid. how many liters of 10% and 20% hydrochloric acid solutions should he mix to do so?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
a chemist wants to obtain 80 liters of a solution that is 12% hydrochloric acid. how many liters of 10% and 20% hydrochloric acid solutions should he mix to do so?
------------
Equation:
acid + acid = acid
0.10x + 0.20(80-x) = 0.12*80
--------
10x + 20*80 - 20x = 12*80
-10x = -8*80
x = 64 liters (amt. of 10% solution needed)
----
80-64 = 16 liters (amt. of 20% solution needed)
=========================
Cheers,
Stan H.
RELATED QUESTIONS
A chemist wants to obtain 80 liters of a solution is 12% hydrochloric acid. How... (answered by checkley79)

For an experiment, a chemist needs 12 liters of a solution that is 30% hydrochloric acid. (answered by mananth)

Theresa Morgan, a chemist, has a 20% hydrochloric acid solution and a 50% hydrochloric... (answered by josgarithmetic)

Theresa Morgan, a chemist, has a 25% hydrochloric acid solution and a 50% hydrochloric... (answered by edjones)

Theresa Yee, a chemist, has a 25% hydrochloric acid solution and a 50% hydrochloric acid... (answered by rwm)

Theresa Yee, a chemist, has 25% hydrochloric acid solution and a 50% hydrochloric acid... (answered by rwm,josmiceli)

A chemist has 20% and 60% solution of acid available. How many liters of each solution... (answered by stanbon)

a chemist has 20% and 60% solutions of acid available. how many liters of each solution... (answered by Alan3354)

A chemist needs to combine two solutions of a certain acid. How many liters of a 30%... (answered by ptaylor)