Essential Chemistry for IGCSE - Electricity And Chemistry (Section 8 - No. 35)
In the electrolysis of molten lead(II) bromide (PbBr₂), what is the oxidation half-reaction?
Pb²⁺ + 2e⁻ → Pb
Pb → Pb²⁺ + 2e⁻
2Br⁻ → Br₂ + 2e⁻
Br₂ + 2e⁻ → 2Br⁻
Explanation
At the anode (oxidation), bromide ions lose electrons to form bromine molecules.
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