Molten lead bromide is electrolysed using inert electrodes. What is formed at the negative electrode (cathode)?
Answer and explanation
Correct answer: A. Lead
- Step 1: Positive lead ions are attracted to the negative electrode.
- Step 2: They gain electrons there and become lead metal.
Answer
Lead.
Why not the others: Bromine forms at the positive electrode, and neither oxygen nor hydrogen is present in a molten ionic compound with no water.
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