Which answer shows the correct balanced equation showing the process of iron oxide (upper case f lower case e subscript 2 end subscript upper case o subscript 3 end subscript) explosively combining with aluminum (upper case a lower case l) to produce iron (upper case f lower case e) and aluminum oxide (upper case a lower case l subscript 2 end subscript upper case o subscript 3 end subscript)?

2Al + Fe2O3 --> 2Fe + Al2O3

Explanation:

What we have here is a single replacement reaction. In a single displacement reaction stronger reducing power element replaces the weaker one .

In this case aluminium is a stronger reducing agent than iron hence it replaces iron from its oxide.

Fe+3 -> Fe

Al -> Al+3

Reduciing power is dependent upon many factors like the size of the ions and charge.In this case the charge for both are same but the size being different properties would be different.

The balanced equation here would be

2Al + Fe2O3 --> 2Fe + Al2O3

These type of reactions would be exothermic giving out energy.

1 is the answer to this problem