Question

ir 9. Write chemical equation for the
following events.
a. Aluminium came in contact with air.
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Answer 1

Answer:

4 Al(s) + 3 O2(g) 2 Al2O3(s)

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Answer 2

Answer:

Aluminium came in contact with air. Aluminium is a very reactive metal. The outer surface of the metal is actually covered by a very thin layer of oxide which keeps the metal protected from the air. But when the oxide layer is damaged, aluminium comes in contact with the air. It is easily attached by air. Then aluminium starts reacting with the oxygen. It will burn as bright white flame to change into aluminium (III) oxide.

Chemical Equation :

4AI + 3O2 ➝ 2AI2O3

Explanation:

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