Question

Write balanced equation for aluminium replace iron from ferric oxide giving aluminium oxide + iron

Answer 1

Unbalanced equation:-
Fe₂O₃ + Al       ---------> Al₂O₃ + Fe

Balanced equation:-
Fe₂O₃ + 2Al       ---------> Al₂O₃ + 2Fe

This reaction is an example of single displacement chemical reaction.
It is a chemical reaction in which one element takes place of another in a compound.
In general , a more reactive element takes place of less reactive element  from its compound.

Here , 
Aluminum  , being a more reactive metal , displaced iron , which is less reactive , from its compound , ferric oxide.