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Write chemical equations that show alumi...

Write chemical equations that show aluminium oxide reacts with acid as well as base.

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(i) `Al_(2)O_(3) + 6HCl rarr 2AlCl_(3) + 3H_(2)O`
(ii) `Al_(2)O_(3) + 2NaOH rarr 2NaAlO_(2) + H_(2)O`.
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