# Balance the following chemical equation: Fe + H2O → Fe3O4 + H2

By Ritesh|Updated : November 4th, 2022

The balanced chemical equation is 3Fe + 4H2O → Fe3O4 + 4H2. Steps to balance this Fe + H2O → Fe3O4 + H2 chemical equation:

Step 1: Given equation:

Fe + H2O → Fe3O4 + H2

Step 2: The procedure used to balance the equation

by balancing chemical equations the conventional way. Using the method

• To start, add up all the atoms of every element on both the product and reactant sides.
• Molecules containing an element having a distinct number of atoms on the product side and the reactant side should be given stoichiometric coefficients.
• The number of atoms must be balanced by the coefficient on either side.
• Typically, the oxygen and hydrogen stoichiometric coefficients are assigned at the end.
• The stoichiometric coefficient has to be multiplied with the total number of atoms of an element available in 1 molecule of the species to determine the number of atoms in one species.
• Continue doing this until both the product and reactant sides have the same number of all the atoms of the reacting components.

Step 3: Now balancing the given equation

We know that the given equation is: Fe + H2O → Fe3O4 + H2

Reactant side:

• 1 Iron atom
• 2 Hydrogen atoms
• 1 Oxygen atom

Product side:

• 3 Iron atoms
• 2 Hydrogen atoms
• 4 Oxygen atoms

The iron atoms are balanced first. After being balanced, the equation is: 3Fe + H2O → Fe3O4 + H2

The iron atoms are balanced first. After being balanced, the equation is: 3Fe + 4H2O → Fe3O4 + H2

The iron atoms are balanced first. After being balanced, the equation is: 3Fe + 4H2O → Fe3O4 + 4H2

The updated equation is: 3Fe + 4H2O → Fe3O4 + 4H2

Reactant side:

• 3 Iron atom
• 8 Hydrogen atoms
• 4 Oxygen atom

Product side:

• 3 Iron atoms
• 8 Hydrogen atoms
• 4 Oxygen atoms

The equation is balanced because there are an equal number of all the atoms of the reacting components on both the reactant and product sides. Hence the balanced equation is: 3Fe + 4H2O → Fe3O4 + 4H2

Summary:

## Balance the following chemical equation: Fe + H2O → Fe3O4 + H2

3Fe + 4H2O → Fe3O4 + 4H2 is the balanced chemical equation of Fe + H2O → Fe3O4 + H2. Iron reacts with water to produce iron oxide and hydrogen gas which can be balanced using the steps given above.