Essential Chemistry for IGCSE - Electricity And Chemistry (Section 6 - No. 37)
What is the role of calcium fluoride (CaF₂) in the aluminum extraction process?
To increase the melting point of the electrolyte.
To decrease the melting point of the electrolyte.
To act as a catalyst for the reaction.
To remove impurities from the aluminum.
Explanation
Calcium fluoride is added to lower the melting point of the electrolyte further.
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