Half Equations (DP IB Chemistry: SL)

• Oxidation numbers can be used to balance chemical equations
• Go through these steps to balance a redox equation:

• 1. Write the unbalanced equation and identify the atoms which change in ox. no.
  2. Deduce the ox.no. changes
  3. Balance the ox.no. changes
  4. Balance the charges
  5. Balance the atoms

Answer:

Step 1: Write the unbalanced equation and identify the atoms which change in ox. no.

Step 2: Deduce the ox.no. changes

Step 3: Balance the ox.no. changes

Step 4: Balance the charges

Step 5: Balance the atoms