Answer :
Answer:
2Fe₂O₃(s) → 4Fe(s) + 3O₂(g)
Explanation:
The unbalanced reaction is:
- Fe₂O₃(s) → Fe(s) + O₂(g)
To balance the oxygen atoms, we put a 2 before Fe₂O₃ and a 3 before O₂(g) - so as to make the total of O atoms in both sides 6 -:
- 2Fe₂O₃(s) → Fe(s) + 3O₂(g)
There are four Fe atoms on the left side and only one on the right side, so we put a 4 before Fe(s):
- 2Fe₂O₃(s) → 4Fe(s) + 3O₂(g)
Now the equation is balanced: there is an equal number of both Fe and O atoms in both sides of the equation.