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shaheerniazi
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Electrolysis of Sodium chlorde with aluminum electrodes
I did an electrolysis of saltwith aluminum electrodes with a 9-volt battery and I got a white powdery substance on the negate
electrode and at the bottom of the vessel in which I performed the electrolysis, is that aluminum hydroxide or aluminum oxide?
[Edited on 30-11-2013 by shaheerniazi]
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bismuthate
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Was it molten?
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shaheerniazi
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Oops Sorry! forgot to mention it was a solution.
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bismuthate
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It might be sodium aluminate formed by the reaction of (NaOH) with Al
[Edited on 30-11-2013 by bismuthate]
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shaheerniazi
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It has a grayish wight colour
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shaheerniazi
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Wikipedia says it is soluble in water and my powder is making a suspension in water.
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homeIandsecurity
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It is Aluminium Hydroxide, with Al metal impurities.
[Edited on 30-11-2013 by homeIandsecurity]
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bismuthate
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Ahh it's insoluble. I suspect impurities..
homeland security, wouldn't Al(OH)3 be attacked by the NaOH produced?
[Edited on 30-11-2013 by bismuthate]
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homeIandsecurity
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It can't be aluminate...because it only occurs in basic solution...but Sodium Chloride in his case did not smell like Chlorine, meaning did not
release any Chlorine.
Sodium Chloride isn't involved in any reaction there. Only water - Hydrogen hydroxide reacts with Al.
Only this:
H+ -> (H)
Al -> Al(3+)
[Edited on 30-11-2013 by homeIandsecurity]
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shaheerniazi
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Thanks guys! I am now labeling i with surety!
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homeIandsecurity
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Just filter that powder to separate all soluble chemicals and dry. Then, put it in HCl acid for test. If releases even one small bubble, you can be
sure impurity is Al metal.
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shaheerniazi
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Yes! when I did the electrolysis small flakes of aluminium foil did some contamination of it.
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homeIandsecurity
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Have you noticed this...VERY INTERESTING!
Your foil will be transparent on some parts after electrolysis. I always thought, that is some thin plastic over it...like nylon...but guess what is
it?
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shaheerniazi
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Hmm, You tell, I have no idea.
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homeIandsecurity
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TRANSPARENT OR INVISIBLE ALUMINIUM.
I am right now doing electrolysis and will post a new thread called TRANSPARENT/INVISIBLE ALUMINIUM with picture in beginnings!
HOMELANDSECURITY@INTERPOL.US
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shaheerniazi
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Cool, but This never happened to my alluminum, will it work with water electrolysis with aluminum electrodes?
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shaheerniazi
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In the internet it says its aluminium oxynitride?
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homeIandsecurity
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Yes...it must be foil (even from chocolate is possible).
You must have sodium chloride...water alone doesn't work.
No, Al oxynitride is formed when burning aluminium in air.
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shaheerniazi
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When I burn it in air then it forms a white powder which is aluminium oxide, and I used the aluminium foil from the kitchen which is used for packing
and when I did it then it formed a white crystaline powder on my foil, let me show you wait.
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shaheerniazi
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homeIandsecurity
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Yes.
Al oxynitride is formed only when burning it in limited amount of air. Here is how to test: Just put it in water...if it smells like ammonia gas then
you have some nitride also.
Did you burn it in stove or just with flame?
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shaheerniazi
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I used a stove.
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bfesser
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It's plastic (or another non-metallic thin film
coating on the foil)! <img src="http://clipartist.info/Art/April/facepalm_facepalm-999px.png" width="14" alt="facepalm" />
[Edited on 30.11.13 by bfesser]
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woelen
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@shaheerniazi: Do not reply to homeIandsecurity anymore. He is fooling you into all kind of stupid things and has fun of your confusion. He is a
troll.
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Zyklon-A
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If NaCl was molten the aluminum would also melt.
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