Which substance is formed when aluminium reacts with oxygen?

Al₂O₃

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AlO

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Al₂O

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AlO₃

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Solution

The correct option is A
Al₂O₃

Aluminium reacts with oxygen present in the air to form aluminium oxide. The reaction involved is:

$4 A l (s)$ + $3 O_{2} (g)$ $\to$ $2 {A l}_{2} O_{3} (s)$

Aluminium oxide is a protective layer formed on the aluminium body which prevents further oxidation of aluminium.

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Which substance is formed when aluminium reacts with oxygen?

Aluminium reacts with oxygen on heating to form Aluminium Oxide. But again its given that Aluminium reacts slowly with water and acids because of a thin outer layer (i.e. Al₂O₃). But if aluminium is not heated then how is it reacting slowly with water and acids? Aluminium utensils also will have a thin outer layer to prevent it from corrosion, how?

Ferric oxide reacts with aluminium to produce aluminium oxide and iron. The balanced chemical equation for the given reaction is :

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Which substance is formed when aluminium reacts with oxygen?

The correct option is A Al2O3 Aluminium reacts with oxygen present in the air to form aluminium oxide. The reaction involved is: 4Al(s) + 3O2(g) → 2Al2O3(s) Aluminium oxide is a protective layer formed on the aluminium body which prevents further oxidation of aluminium.