Essential Chemistry for IGCSE - Electricity And Chemistry (Section 5 - No. 19)
In the extraction of aluminum, what is the purpose of adding cryolite to the aluminum oxide?
To act as a catalyst.
To lower the melting point of the electrolyte.
To increase the electrical conductivity of the electrolyte.
Both B and C.
Explanation
Cryolite lowers the melting point and improves the electrical conductivity.
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