Answer:
2Fe₂O₃ + 3C → 4Fe + 3CO₂
Step-by-step explanation:
An equation is said to be balanced if there are equal number of atoms of one type on the reactants as well as the product side. The given equation is:
Fe₂O₃ + C → Fe + CO₂
# Reactants # Products
Fe = 2 Fe = 1
O = 3 O = 2
C = 1 C = 1
The equation is not balanced as there are different number of atoms of Fe and O on either side. In order to balance it, multiply Fe2O3 by 2, C by 3, Fe by 4 and CO2 by 3 to get:
2Fe₂O₃ + 3C → 4Fe + 3CO₂