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Author: Subject: copper acetate experiment
jamit
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[*] posted on 10-2-2011 at 00:29
copper acetate experiment


Hi. I just finished making copper II acetate crystals using copper II carbonate and vinegar. The crystals are rather dark blue and some green. They are really beautiful crystals.

Now, what can I do with them? I checked out wikipaedia and nothing useful is given. is this the end of the road with this synthesis. I want to use this compound for something useful other than to say that I've made it.

Can someone suggest further experiments and what I might do with copper acetate? Make bigger crystals??? Pyro color??

Thanks in advance

[Edited on 10-2-2011 by jamit]
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a_bab
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[*] posted on 10-2-2011 at 00:51


If you looked no further then some 5 threads downwards you would have seen this:

http://www.sciencemadness.org/talk/viewthread.php?tid=10948

Dry distill it to get back your vinegar in the form of much more concentrated acetic acid. The leftover is the exciting pyroforic copper powder (it autoignites in the air) and some CuO.
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jamit
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[*] posted on 10-2-2011 at 01:05


thanks a_bab, but I saw that post and while "peach" did a great experiment, the result wasn't conclusive of a really "pure" acetic acid. there was way too much contaminants. I rather do the sodium acetate anhydrous and sulfuric acid distillation if I wanted concentrated acetic acid.

Sorry but I was thinking of something more "simple". But thanks alway!
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a_bab
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[*] posted on 10-2-2011 at 01:29


Just heat some in a test tube with a small tube attached, then shake off the copper left. It'll ignite in the air creating sparks and making for an effective trick.


Besides crystal making and chemical garden I can't see any other exciting use for it. Not even as a pyro blue colorant (it's too hygroscopical)
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Retard-3000
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[*] posted on 10-2-2011 at 05:13


Single and Double displacement reactions could provide some useful compounds.
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Sedit
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[*] posted on 10-2-2011 at 08:53


Not exactly easy but I have been experimenting with soaking fired ceramics in concentrated Cu(II)acetate and putting it in a reduction firing causing the ceramic to look exactly like a piece of copper when done. The final effect is rather cool with irridesent copper look all over the figure.




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[*] posted on 10-2-2011 at 16:34


Check the lead (Pb) threads (I think I wrote a longer post on this somewhere- edit: here it one http://www.sciencemadness.org/talk/viewthread.php?tid=2461):
With CuAc2, you can dissolve solid lead metal, forming PbAc2 (lead acetate) and Cu. The PbAc2 can be crystallised, and used for other interesting things :)

[Edited on 11-2-2011 by chemoleo]




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jamit
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[*] posted on 10-2-2011 at 21:35


Thanks guys for all the suggestions. I'll try the one by chemoleo!
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peach
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[*] posted on 11-2-2011 at 13:33


You can use it to decarboxylate things, like tryptophan to tryptamine.

DANGER WILL ROBINSON, DANGER!

Playing around with these may be considered an attempt to make trippy drugs. But they're an example and you can try it with others.

I have uploaded some more photos to that thread a_bab linked to, as I had a go at making it by electrolysis yesterday and today as well.




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ThatchemistKid
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[*] posted on 11-2-2011 at 17:01


Copper(II) acetate in conjuction with ammonium nitrate is used for oxidations such as the oxidation of benzoin to benzil (see attached pdf).

Attachment: copperacetate ammonium nitrate oxidation of benzoin to benzil.pdf (523kB)
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jamit
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[*] posted on 11-2-2011 at 22:41


thanks peach for the info but what you've suggested is completely out of my boundary of chemistry knowledge. I have no idea what you are talking about. But thanks for answering my question.

thanks to ThatchemistKid also. But i don't understand what benzoin is and how it oxidizes to benzil. I'll do some research into the stuff. But thanks.
:D

[Edited on 12-2-2011 by jamit]
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White Yeti
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[*] posted on 9-10-2011 at 15:55


You can use copper acetate to make Benedict's reagent. Usually sulphate is used, but if you recalculate the stoichiometry, you can use the acetate instead. I'm really surprised how many people say that you can't use it for anything; you can use it wherever you can use copper sulphate, I use it all the time.

You can mix with sodium bicarbonate to make copper carbonate, and decompose the carbonate on a hot plate to make copper oxide. You can use it to plate copper onto things. You can use it to make batteries - provided you also have zinc acetate. You can use it to make Schweizer's reagent - if you mix with NaOH or bleach, filter, and mix with ammonia.

The crystals are pretty, but there is so much more to do with copper salts besides growing crystals (it's so elementary schoolish).

Have fun!




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