This diagram covers The Hall-Heroult Cell — Click to Explore within Electrolysis of Aluminium for GCSE Chemistry. Revise Electrolysis of Aluminium in Electrolysis for GCSE Chemistry with 21 exam-style questions and 14 flashcards. Use this page as part of a wider topic revision path rather than treating it as an isolated fact. It is section 2 of 13 in this topic. Focus on the labels, the relationships between parts, and the explanation that turns the diagram into an exam-ready answer.
🔬 The Hall-Heroult Cell — Click to Explore
Practice questions for Electrolysis of Aluminium
Why is aluminium extracted by electrolysis rather than by reduction with carbon?
Explain why aluminium is extracted by electrolysis rather than by reduction with carbon.
Quick recall flashcards
Why do the carbon anodes need replacing regularly?
At 950°C, the oxygen produced at the anode reacts with the hot carbon: C + O₂ → CO₂. The carbon is gradually burned away, so the anodes must be replaced periodically.
What does OIL RIG stand for?
Oxidation Is Loss (of electrons), Reduction Is Gain (of electrons).
At the Anode = Oxidation (loss). At the Cathode = Reduction (gain).