Question detail
What is produced at the cathode during the electrolysis of molten lead bromide?
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. Bromine
- B. Lead
- C. Oxygen
- D. Hydrogen
Answer
Lead
Explanation
During the electrolysis of molten lead bromide, lead is produced at the cathode.
Common mistake
Common Mistake in Half Equations
Students often confuse the half equations for aluminium ion reduction and oxide ion oxidation, mistakenly writing the wrong ions or charges.
To fix this, students should carefully review the charges of the ions involved: aluminium ions (Al^3+) gain three electrons to become aluminium (Al), while oxide ions (O^2-) lose two electrons to become oxygen (O2).
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