The following questions relate to the extraction of aluminium by elect – InterviewSolution

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1.

The following questions relate to the extraction of aluminium by electrolysis :Name the other aluminium containing compound added to alumina and state its significance.

Answer»

The compound is cryolite [Na₃AlF₆ ]

The addition of cryolite lowers the melting point of alumina from 2050°C to 660 °C.

Furthermore, it increases the electrical conductivity of the molten alumina.

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