Write reactions to justify amphoteric nature of aluminium
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Explanation:
Reaction of aluminium with HCl and Naoh.both the reaction gives rise to salt and water
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On heating orthoboric acid at 370 K or above, it changes to metaboric acid and On further heating, this yields boric oxide B2O3.
H3BO3→ HBO2(metaboric acid) → B2O3 (boric acid)
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