Using Oxidation
Numbers to Balance Equations 
Some equations can be balanced by sight. Others require
more work
on the part of the student. Some equations cannot be balanced by sight
and ones involving many reactants and products can be almost impossible
to solve. Below is a method of balancing using redox numbers that works
for
all reaction no matter how complex.

Step 1 Write the correct formulas for all the reactants
and products

Step 2 Assign oxidation numbers to the atoms in the
equation.

Step 3 Identify which atoms change their oxidation numbers.

Step 4 Make the number of atoms that change oxidation
number the
same on both sides by inserting temporary coefficients.

Step 5 Compute the total change in oxidation
number for the
oxidation and reduction that occur.

Step 6 Make the total increase in oxidation number equal
the total
decrease by multiplication using appropriate factors.

Step 7 Balance the remainder by inspection. 