3a aluminium ab
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Work-sheet
The extraction of aluminium
© Blickpunkt Chemie, 1996 Schroedel, Schulbuchverlag GmbH, Hannover
1. Please fill in the correct terms.
2. From which raw material is aluminium extracted?
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3. Why is cryolite added to the melt?
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4. Which dangerous chemical by-product emerges from the addition of cryolite in an electrolysis?
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5. Please complete following equations.
Reduction: 4 Al3- 4 Al
Oxidation: 6 O2- 3 O2
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Redoxreaction:
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