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Topic: Molarity question, related to below question  (Read 4377 times)

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Offline studentcarie

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Molarity question, related to below question
« on: June 25, 2011, 09:44:57 PM »
Trying to figure out the molarity of Isobutyraldehyde solution

Received at a 99% solution, molecular weight 72.11, and density at 0.790g/mL (790g/L). Am I right to calculate the molarity to be 10.96M?

Thanks for helping!
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Offline Schrödinger

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Re: Molarity question, related to below question
« Reply #1 on: June 26, 2011, 02:05:16 AM »
If it is 99% w/w, then the molarity is 10.846 M, I think.
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Offline Borek

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Re: Molarity question, related to below question
« Reply #2 on: June 26, 2011, 05:00:33 AM »
Quote from: studentcarie on June 25, 2011, 09:44:57 PM
Am I right to calculate the molarity to be 10.96M?

No - you didn't take purity into account.
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Offline studentcarie

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Re: Molarity question, related to below question
« Reply #3 on: June 26, 2011, 04:26:45 PM »
Thanks so much!  :)

I'm actually now reasoning that, being 99% pure, the difference in molarity either way is negligible for how I'm using it in experiments.

Glad to have found this forum!
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