Chemistry › Section Q · Electrochemistry › Topic Q.1
Redox chemistry
Every battery, fuel cell and electroplating bath runs on reactions that move electrons from one substance to another. Before routing those electrons through a wire, you need to write redox equations that balance in atoms, in charge and in electrons, in acidic and in basic solution.
In this topic
- From redox reactions to electrochemistry
- Oxidation numbers: a quick recap
- Oxidants and reductants
- Why inspection is not enough
- The half-reaction method in acid
- Worked example: a breath alcohol test
- Balancing in basic solution
- Worked example: permanganate and sulfite in base
- Common mistakes to avoid
- Key takeaways
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