Quantative analytical methods (Chem)

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RobbieC
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#1
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I am looking for more ways to investigate the composition of my product in terms of percentage of Aspirin molecules in the reflux product.

The only method I have so far, is titration.

I have thought about the idea of colorimetry, but am not sure how I can get another chemical to react with the Aspirin product so I can do this...

Any takers?
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cobra
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(Original post by RobbieC)
I am looking for more ways to investigate the composition of my product in terms of percentage of Aspirin molecules in the reflux product.

The only method I have so far, is titration.

I have thought about the idea of colorimetry, but am not sure how I can get another chemical to react with the Aspirin product so I can do this...

Any takers?
couldnt you add sodium hydroxide and then measure the weight of the dried precipitate?, i know its not colourimetry
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RobbieC
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I'm not sure, why, and if that would work, Cobra
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cobra
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(Original post by RobbieC)
I'm not sure, why, and if that would work, Cobra
No, i'm wrong! its alredy a solid, i think you have chosen a very difficult investigation though! Isnt asprin a solid because you cool the reflux product in ice then vacuum filter and you get a solid?
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RobbieC
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(Original post by cobra01977)
No, i'm wrong! its alredy a solid, i think you have chosen a very difficult investigation though! Isnt asprin a solid because you cool the reflux product in ice then vacuum filter and you get a solid?
Vacuum filtration, yes. I don't believe there is any ice involved, though.
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