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Topic: where is the copper now experiment...  (Read 5190 times)

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Offline goodboy

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where is the copper now experiment...
« on: June 16, 2007, 08:44:23 AM »
Hey guys, a little bit new here, i need a little help, i just needed to make sure, here's the setup that was asked of us, 1ml of Nitric acid(HNO3) is dropped to .010 grams of copper in a 6inch test tube....there were questions, one of these were: where is the copper now?after the reaction, the copper disappears,
is this lab activity familiar to you?thnx in advance.

oops sorry, just new here. anyway i think the equation for that is:

2Cu+2HNO3 ---> H2 + 2CuNO3...is this correct???i jst wanna check.
« Last Edit: June 16, 2007, 11:05:55 AM by goodboy »

Offline constant thinker

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Re: where is the copper now experiment...
« Reply #1 on: June 16, 2007, 10:57:22 AM »
Start by writing a chemical equation of what happened, or what you think may have happened. Then people will help you.
« Last Edit: June 16, 2007, 05:37:25 PM by Borek »
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Offline hmx9123

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Re: where is the copper now experiment...
« Reply #2 on: June 16, 2007, 02:20:27 PM »
You've got the right idea with regards to what's happening to the copper.  Ask yourself these questions, though:

What oxidiation states is the copper in on both sides of the equation? 
What oxidation states is it most likely to be in?
What observations did you make in the experiment?  Color changes?  Gasses evolved?  These observations will help to clarify what's going on.  Let us know your observations and your revised ideas based on the above, and we'll go from there.

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