Oxidation and reduction at electrodes
What Oxidation and reduction at electrodes means in Chemistry GCSE, as defined for AQA.
Definitions of Oxidation and reduction at electrodes
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Reference: AQA
Hydrogen is oxidised at the anode and oxygen is reduced at the cathode, so the overall reaction produces water as the only chemical product.
At the anode oxide ions lose electrons to form oxygen gas, and at the cathode aluminium ions gain electrons to form aluminium.
Topics that use Oxidation and reduction at electrodes
- Fuel cells (AQA GCSE)
- Using electrolysis to extract metals (AQA GCSE)
Related terms
- Anode
- Continuous electricity generation
- Electrochemical oxidation
- Electrodes
- Electrolysis
- Electrolysis of molten compounds
- Electron transfer
- Evaluating hydrogen fuel cells
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