mintreina
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H2O2 and tetraaminecopper (ii) sulfate
When I pour a 3% H2O2 solution into a solution of tetraaminecopper ii sulfate, I observe great amount of bubbles fizzing out, releasing a lot of heat
as well. The deep blue colour of the copper solution turns reddish, with brown precipitate.
What is the reaction that is happening here?
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Bert
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Thread Moved
22-9-2015 at 04:06 |
byko3y
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Fenton's reagent
Most likely ammonia is oxidized to some nitrogen oxides, which give the precipitate.
[Edited on 22-9-2015 by byko3y]
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Velzee
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@byko3y But where then, does Fe get introduced to the equation?
[Edited on 9/22/2015 by Velzee]
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unionised
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I wonder if this is one of those odd reactions where H2O2 acts as a reducing agent and converts Cu++ to Cu+
The red / brown colour might be Cu2O
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Velzee
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Attempting to isolate the unknown compound
No stoichiometric amounts were used:
1) I made a probably dilute solution of tetraaminecopper (ii) sulfate that looked similar to this, but far less(the greenish foam contains some of the
product):
http://i.imgur.com/nNQoSmi.jpg
2) In the midst of adding H2O2 to the TACS solution:
https://youtu.be/aJE0ZPjMEas
3) Filtering some of the foam(you will see that this foam is not always created):
http://i.imgur.com/W3wfyo7.jpg
What was left in the container:
http://i.imgur.com/moHXrLw.jpg
4) After adding H2O2 to the mixture until it had stopped fizzing a lot, I was left with a dark-colored, minorly fizzing (as a cup of soda) solution:
https://youtu.be/SgRv2z9q0oU
I will try to report back when/if the product becomes dry and/or when the solution has evaporated completely.
[Edited on 9/22/2015 by Velzee]
Check out the ScienceMadness Wiki: http://www.sciencemadness.org/smwiki/index.php/Main_Page
"All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident."
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