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Author Topic: Why is Al2O3 soluble?  (Read 6778 times)

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Why is Al2O3 soluble?
« on: February 12, 2008, 04:05:33 AM »

Why is Al2O3 soluble in sodium hydroxide? What´s the minimal required concentration for?

I have no idea. THx.


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Re: Why is Al2O3 soluble?
« Reply #1 on: February 12, 2008, 04:26:57 AM »

Al2O3 reacts with sodium hydroxide, to produce aluminum hydroxide, which is also insoluble.  But, in an excess of hydroxide, aluminum from a soluble complex.  "Minimum required concentration for" is a little hard to answer, any concentration (more than a trace, likely) so long as there is a "excess" which is a little hard to pin down.
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