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algebra...acid solution mixtures
- Thread starter rockc
- Start date
HINT: putting a bit of the 50% in the 30% does what to the 30% ? Do some thinking, Rock...rockc said:: Suppose that a chemist is mixing two acid solutions...one of 30% concentration and the other of 50% concentration. Which of the following concentrations is not possible as a resulting mixture? A)40% B)45% C)35% D)25%.
I thought and I thought until I couldn't think anymore. I didn't see any variables to solve the problem with....so that's what brought me here. As an answer to your question...Logically speaking it would seem to me if you diluted the 30% solution you would have a weaker solution. So I know that 45 is ok...I figured that much out. So if the weaker solution is 25% well then the answer is not 25% or 45% because those both work as answers. That leaves either 35% as the answer or 40%....Am I correct in my thinking? If you could help with setting up the problem....I'm sure I could solve it. I just don't know where to begin.
rockc said:: Suppose that a chemist is mixing two acid solutions...one of 30% concentration and the other of 50% concentration. Which of the following concentrations is not possible as a resulting mixture? A)40% B)45% C)35% D)25%.
It would seem to me that, since a 50% solution is MORE concentrated than a 30% solution, mixing a 50% solution with a 30% solution would have to raise the concentration from 30%, and lower the concentration from 50%....... In other words, a mixture of 30% solution with 50% solution should result in a mixture that's somewhere between 30% and 50% concentration.
Does that help?
Thanks for the info....I think I can figure it out. What you said does make sense. I was looking for a formula to solve this problem
but maybe everything is not solved via formulas. Maybe sometimes we must look at things logically to determine the answer. Unfortuntely, I am artistically
inclined and problem solving does not come natural to me. What is it they say, Right brain, left brain...one or the other but seldom both...lol.
but maybe everything is not solved via formulas. Maybe sometimes we must look at things logically to determine the answer. Unfortuntely, I am artistically
inclined and problem solving does not come natural to me. What is it they say, Right brain, left brain...one or the other but seldom both...lol.