CAIE IGCSE Chemistry 9.6.5 Aluminium Extraction From Purified Questions
Work through real CAIE IGCSE Chemistry questions to explain the aluminium electrolytic process, cryolite and carbon-anode reactions.
- Syllabus
- 2026–2028
- Course
- Chemistry 0620
Exam points
- identify bauxite and aluminium oxide as the feedstock for aluminium electrolysis
- explain cryolite’s role in dissolving aluminium oxide and lowering the operating temperature
- write ionic half-equations for aluminium formation at the cathode and oxygen at the anode
- explain carbon-anode consumption and carbon dioxide formation during aluminium extraction
CAIE IGCSE Chemistry 9.6.5 Aluminium Extraction From Purified Questions question 1
[Maximum number: 1]
Why is cryolite used in the extraction of aluminium by electrolysis?
A
It dissolves the aluminium oxide.
B
It protects the anodes from corrosion.
C
It changes bauxite to aluminium oxide.
D
It decreases the melting point of the aluminium.
A
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