The diagram shows the electrolysis of molten lead bromide - OCR Gateway - GCSE Chemistry Combined Science - Question 6 - 2021 - Paper 1
Question 6
The diagram shows the electrolysis of molten lead bromide.
The diagram shows the electrolysis of molten lead bromide.
Which row in the table shows the products for... show full transcript
Worked Solution & Example Answer:The diagram shows the electrolysis of molten lead bromide - OCR Gateway - GCSE Chemistry Combined Science - Question 6 - 2021 - Paper 1
Step 1
Anode: What is produced?
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Answer
During the electrolysis of molten lead bromide, bromine ions ( ext{Br}^-) are oxidized at the anode to form bromine gas (Br₂).
Step 2
Cathode: What is produced?
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Answer
At the cathode, lead ions ( ext{Pb}^{2+}) are reduced to form solid lead (Pb) as they gain electrons.
Step 3
Conclusion and Answer Selection
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Answer
Based on the products formed at the anode and cathode, the correct row from the table is option B: Anode - bromine, Cathode - lead.
