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Al2O3 is amphoteric -explain with suitab...

`Al_2O_3` is amphoteric -explain with suitable reactions.

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`Al_2O_3` reacts with both acids and bases. While reacting with acids it behaves like base. In the reaction with bases it behaves like acid. So it is amphoteric .
Reaction with acid : `Al_2O_3 +6 HCl to 2AlCl_3 + 3H_2O`
Reaction with base : `Al_2O_3 + 2NaOH to 2NaAlO_2 + H_2O`
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VGS PUBLICATION-BRILLIANT-THE P-BLOCK ELEMENTS - GROUP 13 -SHORT ANSWER QUESTIONS
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  12. Explain the reactions of aluminium with acids.

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