When a piece of aluminium is placed in dilute hydrochloric acid, there is no immediate reaction. If the aluminium is left in the dilute hydrochloric acid for several hours, bubbles start to form. Explain why aluminium does not react immediately visbel with dilute hydrochloric acid.
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1
Answer:
ACID IS HARMFULL FOR BODY
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Answer:
Aluminium coated with layer of (unreactive) aluminium oxide
Explanation:
A layer of aluminium oxide forms on the surface of the aluminium due to prior reaction with the air and acts as a protective barrier. The acid must remove this layer before it is able to react with the aluminium underneath.
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