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Topic: What reactions are in Al + NAOH + H2O = NAAl(OH)4 + H2?  (Read 4745 times)

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Offline henrybar

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What reactions are in Al + NAOH + H2O = NAAl(OH)4 + H2?
« on: October 20, 2015, 11:58:38 PM »
what can you tell me about the reaction 2Al + 2NAOH + 6H2O → 2NAAl(OH)4 + 3H2?

What kind of reaction is it? Is it the same as 2 Al + 2 NaOH + 2 H2O → 2 NaAlO2 + 3 H2? What's the difference. Please answer in a way a grade 12 chemistry student might understand.
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Offline Borek

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Re: What reactions are in Al + NAOH + H2O = NAAl(OH)4 + H2?
« Reply #1 on: October 21, 2015, 02:55:45 AM »
Aluminate anion can be written in many ways, depending on how the salt is hydrated. These reactions are perfectly equivalent, although the first one is closer to what is happening in the solution, while the second one refers to a process in which Al is dissolved in NaOH, and then the produced aluminate is recovered and dried out.
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Offline Hunter2

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Re: What reactions are in Al + NAOH + H2O = NAAl(OH)4 + H2?
« Reply #2 on: October 21, 2015, 03:20:35 AM »
One addition, both are redox reactions. Aluminium gets oxidized and hydrogen reduced.
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