The reaction in which oxidation and reduction reaction take place simultaneously is known as the redox reaction.
The half oxidation reaction can be balanced by following the steps:
1. Assign the oxidation states to all the elements in the given reaction:
Identify the half oxidation and half reduction reaction.
The reduction is a process in which a chemical species gain electrons.
The oxidation is a process in which a chemical species donate or lose electrons.
2. Accordingly, the oxidation half-reaction can be written as:
3. All the elements except oxygen and hydrogens are balanced. But here it is already balanced. So this step can be skipped.
4. Balancing of the oxygen is done by adding water molecules where oxygen is less. But here no oxygen is present. Therefore the step is skipped.
5. Balancing of hydrogen is done by adding hydrogen ions on the side where hydrogen is less. But again this step can be skipped here.
6. Balancing of the charges. The charge on both sides of the reaction is calculated and it has to be the same. If not then the charge is balanced by adding extra electrons on the side where needed. This can be done as:
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