## Amphoteric Oxide Aluminum Oxide

Alex Nguyen 3I
Posts: 100
Joined: Fri Sep 25, 2015 3:00 am

### Amphoteric Oxide Aluminum Oxide

Can someone explain to me how the reaction between sodium hydroxide, sodium hydroxide, and water works? $2 NaOH(aq)+Al_{2}O_{3}(s)\rightarrow 2Na[Al(OH)_{4}](aq)$
I know that aluminum oxide is acting as an acidic oxide here. It's reacting with a base, so shouldn't salt and a water form? Does this have anything to do with the water being involved as a reactant?

Chem_Mod
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Joined: Thu Aug 04, 2011 1:53 pm
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### Re: Amphoteric Oxide Aluminum Oxide

Above equation doesn't seem to be balanced in hydrogen or oxygen.

I believe the right side is 2NaAlO2 + H2O so that a salt and water is formed.

Alex Nguyen 3I
Posts: 100
Joined: Fri Sep 25, 2015 3:00 am

### Re: Amphoteric Oxide Aluminum Oxide

I actually wrote the equation down wrong. It's $2NaOH(aq) + Al_{2}O_{3}(s)+3H_{2}O(l)\rightarrow 2Na[Al(OH)_{4}](aq)$, which is balanced, but I'm not sure if the transition metal complex is a salt or not.

Aashi_Patel_3B
Posts: 20
Joined: Wed Sep 21, 2016 2:57 pm

### Re: Amphoteric Oxide Aluminum Oxide

Alumnium oxide splits and the oxygen accepts a proton which then forms water. Aluminium oxide is an acid because it reacts with a base to form a salt and water which happens during a neutralization reaction...someone correct me if I'm wrong?

-Aashi Patel 4E