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Topic: Solubility of Al(OH)3 + 3HNO3  (Read 8499 times)

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Offline WhiteSkyRising

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Solubility of Al(OH)3 + 3HNO3
« on: March 31, 2008, 03:53:48 PM »
Just a quick question:

Al(OH)3 + 3HNO3 ---> Al + 3NO3 + 3H2O

Why doesn't the NO3 and Al don't combine to form Al(NO3)3 ? Is it because the NO3 is soluble? I'm just hit by a brain block I guess ???... thanks!

Offline Borek

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Re: Solubility of Al(OH)3 + 3HNO3
« Reply #1 on: March 31, 2008, 03:59:45 PM »
Just a quick question:

Al(OH)3 + 3HNO3 ---> Al + 3NO3 + 3H2O

Why doesn't the NO3 and Al don't combine to form Al(NO3)3 ?

Your product is Al(NO3)3(aq) and not Al(NO3)3(s). Salt is completely dissociated. And your equation is wrong (you should add charges to ions, or write state).
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Offline Arkcon

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Re: Solubility of Al(OH)3 + 3HNO3
« Reply #2 on: March 31, 2008, 05:22:27 PM »
Just a quick question:

Al(OH)3 + 3HNO3 ---> Al + 3NO3 + 3H2O

This reaction is wrong.  Balanced perhaps, by atoms, but the products don't exist, or co-exist with each other, or with residual reactants.

Quote
Why doesn't the NO3 and Al don't combine to form Al(NO3)3 ? Is it because the NO3 is soluble? I'm just hit by a brain block I guess ???... thanks!

Not brain block, your instincts are correct, you just got a little lost in the balancing. 

Now, back in the day, they used to say things like "aluminum hydroxide is soluble in nitric acid", when they should have said, "aluminum hydroxide reacts with nitric acid to form soluble products", could that old fashioned explanation have been what confused you?
Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.

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