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Question
What happens when black lead sulphide is treated with ozone?
Very Short Answer
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Solution
When black lead sulphide is treated with ozone, lead sulphide (black) is oxidised to lead sulphate (white).
\[\ce{O3 -> O2 + [O] \times 4}\]
\[\ce{PbS + 4[O] -> PbSO4}\]
\[\ce{PbS + 4O3 -> PbSO4 + 4O2}\]
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