December 04, 2020, 03:56:34 PM
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### Topic: Simple Dilution Question  (Read 206 times)

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#### thewisegrow

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##### Simple Dilution Question
« on: November 16, 2020, 09:30:56 AM »
Let's say beaker A contains a solution with a ppm of 3000 and beaker B contains 1 liter of pure water. If I take 10 mL of the solution from beaker A and add it to beaker B for a new final volume of 1010 mL, what is the ppm of the new solution in beaker B? I get about 30 ppm. Is that correct? Thank you very much.
« Last Edit: November 16, 2020, 10:00:41 AM by thewisegrow »

#### Babcock_Hall

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##### Re: Simple Dilution Question
« Reply #1 on: November 16, 2020, 10:54:38 AM »
It is close to being correct, but a slightly better answer is possible.  What equation did you use?
« Last Edit: November 16, 2020, 11:07:50 AM by Babcock_Hall »

#### thewisegrow

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##### Re: Simple Dilution Question
« Reply #2 on: November 17, 2020, 12:51:32 AM »
Hello, thank you for your response. I used C1V1 = C2V2. My precise answer is 29.7 ppm. Thank you very much for your help.

#### Babcock_Hall

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##### Re: Simple Dilution Question
« Reply #3 on: November 17, 2020, 08:37:48 AM »
That looks good.  Students sometimes use the wrong volumes when applying this formula, but other than that, this is a straightforward calculation.

#### thewisegrow

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##### Re: Simple Dilution Question
« Reply #4 on: November 17, 2020, 09:18:53 AM »
That looks good.  Students sometimes use the wrong volumes when applying this formula, but other than that, this is a straightforward calculation.

Thank you so much Babcock. By the way, I posted another question about how to interpret a protocol if you feel like checking it out. Thank you very much.