Lead can be extracted from lead(II) sulfide, PbS, in two stages.

Stage 1: Lead(II) sulfide is heated in air. It reacts with oxygen to produce lead(II) oxide and sulfur dioxide.
Stage 2: The Lead(II) oxide is then heated in a blast furnace with coke.

(a) Write a chemical equation for the reaction in Stage 1.

3 answers

2PbS + 3O2 --> 2PbO + 2SO2
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