Home › CBSE Class 12 (Science) › Chemistry › General Principles and Processes of Isolation of Elements › The Hall–Héroult electrolysis of alumina is run …
The Hall–Héroult electrolysis of alumina is run near which temperature?
A940 to 980 °C
BAbout 2070 °C
C1600 to 1700 °C
D400 to 450 °C
Answer & Solution
Correct answer: A. 940 to 980 °C
Adding cryolite and AlF3 lowers the bath melting point so the cell operates at about 940 to 980 °C.
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