1.Write the half-reactions:

Reduction half-reaction:

Oxidation half-reaction:

2. Balance each half-reaction for atoms other than and :

Reduction:
( is already balanced)
Oxidation:
(C is already balanced)
3. Balance oxygen atoms by adding :

Reduction:
(4 0 atoms on both sides)

Oxidation:
(4 atoms on both sides)
4. Balance hydrogen atoms by adding :

Reduction:
(8 atoms on both sides)

Oxidation:
(no atoms to balance)
5. Balance the charges by adding electrons :

Reduction:

Oxidation:

6. Combine the half-reactions by ensuring the number of electrons lost in the oxidation half reaction equals the number of electrons gained in the reduction half-reaction:

To equalize the electrons, multiply the oxidation half-reaction by 5:

Now combine with the reduction half-reaction:

Balanced equation:

Therefore, the coefficients for the balanced reaction are:
Answer: 2, 5, 16