Question 169052: A beaker contains 400L of a solution that is 32% acid. How much water should be added to make a solution that is 25% acid?
I am having trouble figuring this out. I need to organize information in a chart and show my work. Thanks.
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! A beaker contains 400L of a solution that is 32% acid. How much water should be added to make a solution that is 25% acid?
I am having trouble figuring this out. I need to organize information in a chart and show my work. Thanks.
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400 liters of 32% is 400*0.32 liters of acid, or 128 liters. The rest of it, 400-128, is water. That's 272 liters of water.
To add water to make it 25% means that the 128 liters is 1/4 of the overall mixture. The other 3/4 has to be water, so that's 384 liters.
Since there are 272 liters of water now, you'd have to add 112 liters of water.
BTW, 400 liters is a REALLY BIG beaker, about 100 gallons.
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