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Question
Write suitable chemical equations to show the nature of the following oxide.
Al2O3
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Solution
Amphoteric substances react with both acids and bases. Al2O3 reacts with both NaOH and H2SO4.
\[\ce{Al_2O_3 + 2NaOH -> NaAlO_2}\]
\[\ce{Al_2O_3 +3 H_2SO_4 -> Al_2(SO_4)_3 + 3H_2O}\]
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