Electrolysis of Aluminium Oxide producing Al but Al > H in reactivity??

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nwmyname
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In a discussion, I was told Aluminium Oxide would be electrolysed and Aluminium would be formed.

However, in my GCSE studies, Hydrogen would be discharged unless the Metal was less reactive than Hydrogen in the reactivity series.

Aluminium is more reactive, so Hydrogen should be discharged, not aluminium.

Why is this not the case?
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DanielDaniels
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(Original post by nwmyname)
In a discussion, I was told Aluminium Oxide would be electrolysed and Aluminium would be formed.

However, in my GCSE studies, Hydrogen would be discharged unless the Metal was less reactive than Hydrogen in the reactivity series.

Aluminium is more reactive, so Hydrogen should be discharged, not aluminium.

Why is this not the case?
because it is higher in the reactivity series, we use electrolysis to extract aluminium. aluminium ions will gain the electrons from the cathode.
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Pigster
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Al2O3 isn't dissolved in water, so there isn't any hydrogen to be discharged.

Also, it doesn't even dissolve in water.
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