how will you show that aluminium is more reactive than iron
'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.
Fe2O3 + 2 Al → 2 Fe + Al2O3
This reaction is used for welding purposes as molten iron condenses in the crack to join it.