How do I balance redox equations in acidic reactions, without trial and error, using half equations?
Here is a summary on the steps to complete these question types.
- Determin oxidation numbers 2. Figure out what is being oxidised and what is being reduced. 3. Write half equations. 4. Balance the atoms exclusing O and H. 5. To balance O add H2O, to balance H add H+. 6. Add E- to balance charges. 7. Multiply half equations so the number of electrons on each side =0. 8. Combine the half equations by adding together and cancelling out molecules that appear on both sides. 9. Final check to ensure all is balanced correctly.
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