Question

how will you show that aluminium is more reactive than iron?
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Answer 1

Answer:

Hello my friend

Explanation:

Aluminium is much more reactive than iron because its standard reduction potential is higher than iron. However, aluminium is still less easily corroded than iron because oxygen forms a protective oxide layer of Al2O3 on its surface.

Answer 2

Answer:

Thermite reaction.

Explanation:

Aluminium is more reactive than Iron' can be proved by taking the example of the Thermite reaction. This is an exothermic displacement reaction in which, aluminium and iron(III) oxide react and the products formed are aluminium oxide and elemental iron in the molten state. This is because aluminium forms stronger bonds with oxygen than iron since it is more reactive.  

Fe2O3 + 2 Al → 2 Fe + Al2O3

This reaction is used for welding purposes as molten iron condenses in the crack to join it.

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