Electrolysis uses electrical energy to drive non-spontaneous chemical reactions.
Key points
- Cathode: reduction (gains electrons)
- Anode: oxidation (loses electrons)
- Discharge preference: H⁺ over Na⁺
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WAEC tip
Remember OILRIG: Oxidation Is Loss, Reduction Is Gain (of electrons).
Practise this
State the products at the cathode and anode when dilute H₂SO₄ is electrolysed with platinum electrodes.
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