What is the oxidation number method?
The oxidation number method is a way of keeping track of electrons when balancing redox equations.
The general idea is that electrons are transferred between charged atoms.
Here's how the oxidation number method works for a very simple equation that you could probably balance in your head.
Step 1. Identify the atoms that change oxidation number
Left hand side:
Right hand side:
The changes in oxidation number are:
Step 2. Equalize the changes in oxidation number
You need 2 atoms of
Step 3. Insert coefficients to get these numbers
The balanced equation is