Question:
Write the chemical composition of cryolite.
Write the chemical composition of cryolite.
Updated On: Nov 6, 2025
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Solution and Explanation
Answer:
Na3AlF6 (Sodium hexafluoroaluminate)
Explanation:
Cryolite is a double fluoride of sodium and aluminium, having the chemical formula Na3AlF6.
It is used as a solvent for alumina (Al2O3) in the Hall–Héroult process for the extraction of aluminium, as it lowers the melting point and increases conductivity of the electrolyte.
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