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Topic: unknown product  (Read 3945 times)

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Offline khwcm

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unknown product
« on: June 03, 2011, 03:00:54 AM »
so i was just looking at this
http://woelen.homescience.net/science/chem/exps/fluorescent_copper/index.html
but i dont have pyridine, so i decided to use ammonia instead of it.

I got a blue precipitate at first, and i remove the excess liquid, it turn deep green, with abit brown later..

so can anyone tell me whats going on and what is it?
PS: i didnt got a ultraviolet light ...so i didnt know whether it is a fluorescent complex (or even it is not a complex)

Offline SirRoderick

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Re: unknown product
« Reply #1 on: June 03, 2011, 07:13:58 PM »
Pyridine is nothing like ammonia, why did you do that?

*nevermind this part, wasn't accurate*

Turns out I can't remember. A lot of copper solutions are blue and green  ;D

Offline khwcm

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Re: unknown product
« Reply #2 on: June 04, 2011, 06:58:29 AM »
i am just so free to find various chemical try and see what are the out come. i tried oxalate ion and phenol but no observible change, while ammonia give a green precipitate(not solution indeed)..
thanks for your reply  ;)

Offline SirRoderick

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Re: unknown product
« Reply #3 on: June 04, 2011, 03:34:25 PM »

Offline khwcm

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Re: unknown product
« Reply #4 on: June 05, 2011, 11:37:05 AM »
so do u mean thats [Cu(NH3)2]+ ?

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