Question detail
During the electrolysis of molten lead bromide, what is produced at the anode?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Electrolysis
Question
- A. Lead
- B. Bromine
- C. Oxygen
- D. Hydrogen
Answer
Bromine
Explanation
Bromine is produced at the anode during the electrolysis of molten lead bromide as bromide ions lose electrons.
Common mistake
Aluminium extraction via carbon reduction
Students think aluminium can be extracted by reducing Al₂O₃ with carbon because aluminium is a metal.
Aluminium oxide is too stable for reduction with carbon; the high temperature required would also melt the carbon anode, so electrolysis is used instead.
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