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Topic: I need to break apart this compound  (Read 10177 times)

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Corvettaholic

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I need to break apart this compound
« on: April 27, 2004, 06:04:08 PM »
I need to seperate oxygen from this Si2O3, which is a rock I think. The melting point of Silicon is 1800, and boiling point is 3200 if that helps. How do I do this? Is there something I could react it with that give me what I want? The goal is gaseous oxygen. Si2O3 is stable, so its not going to want to react, I think this goes against the idea of entropy?

Offline Mitch

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Re:I need to break apart this compound
« Reply #1 on: April 27, 2004, 06:15:34 PM »
Cut yourself and drop it into hydrogen peroxide, you'll make gaseous O2. The more blood you drop the more gaseous oxygen you'll make. ;)


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Corvettaholic

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Re:I need to break apart this compound
« Reply #2 on: April 27, 2004, 06:18:21 PM »
Hmmm... that WOULD be a good idea if I found a way to force my body to mass produce blood. Next project idea  ;D

The reason I wanted to break it off of silicon, is cause that stuff is in dirt, and I want to play with dirt using heat as my weapon.

Offline AWK

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Re:I need to break apart this compound
« Reply #3 on: April 28, 2004, 10:08:47 AM »
First of all, Si2O3 doesn't exist. so what you can to do?
« Last Edit: April 28, 2004, 10:09:46 AM by AWK »
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Offline Scratch-

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Re:I need to break apart this compound
« Reply #4 on: April 28, 2004, 10:21:13 AM »
Its SiO2 not Si2O3. You can alwayse make glass if your idea doesn't work.
« Last Edit: April 28, 2004, 10:26:26 AM by Scratch- »
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Corvettaholic

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Re:I need to break apart this compound
« Reply #5 on: April 28, 2004, 11:29:58 AM »
Heh, woops. One too many of each. So it isn't likely I'm going to seperate that oxygen atom, is it?

Offline Scratch-

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Re:I need to break apart this compound
« Reply #6 on: April 28, 2004, 01:09:17 PM »
You will use more energy breaking it apart than your likley to get in your reaction using the O2.
« Last Edit: April 28, 2004, 01:09:50 PM by Scratch- »
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Corvettaholic

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Re:I need to break apart this compound
« Reply #7 on: April 28, 2004, 01:33:39 PM »
Well scrap that idea then. Well I wonder how hard it would be to seperate the aluminum and nitrates that plants like in dirt. Probably not worth my time trying to find a fuel out of dirt, cause it won't be cheap.

Offline hmx9123

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Re:I need to break apart this compound
« Reply #8 on: April 28, 2004, 01:58:39 PM »
Aluminum sulfate is sold in plant stores as a fertilizer.  Just add it to water and you've got Al+3 ions.

Corvettaholic

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Re:I need to break apart this compound
« Reply #9 on: April 28, 2004, 03:17:44 PM »
Let me think about how this works:

Al2(SO4) + H2O => ?

Are the Al ions going to be floating around by themselves, or will they be bonded to each other free of the sulfate? Its been forever since I've done chemical equations so I don't remember how to do it. Will there be free electrons in the result?

Offline AWK

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Re:I need to break apart this compound
« Reply #10 on: April 30, 2004, 02:39:12 AM »
Al2(SO4)3 even in solid state is ionic compound.
dissolution in water only breaks a crystal lattice. Additionally Al3+ cations
hydrates to form Al(H2O)63+ and all ions are surrounded by excess of water molecules.
Commercially avaiable aluminium sulfate may already contain 5, 8 or 10 water molecules.

So writing down a real equation for dissolution is not as trivial as:
Al2(SO4)3 = 2Al3+ + 3SO42-

eg.
Al2(SO4)3.5H2O is in fact Al(H2O)2Al(H2O)3(SO4)3
and equation of dissolution in water is
Al(H2O)2Al(H2O)3(SO4)3 + 7H2O = 2Al(H2O)63+ + 3SO42-
« Last Edit: April 30, 2004, 02:44:08 AM by AWK »
AWK

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