Chemistry 9701 · AS & A Level · Atoms, molecules and stoichiometry

Atoms, molecules and stoichiometry — practice question

If lead(II) sulfide, $\text{PbS}$, is heated in air, sulfur dioxide and lead(II) oxide are produced. What is the equation for the reaction between $\text{PbS}$ and oxygen?

  • A$\text{PbS} + 2\text{O}_2 \rightarrow \text{SO}_2 + \text{PbO}_2$
  • B$\text{PbS} + 2\frac{1}{2}\text{O}_2 \rightarrow \text{SO}_3 + \text{PbO}_2$
  • C$\text{PbS} + 1\frac{1}{2}\text{O}_2 \rightarrow \text{SO}_2 + \text{PbO}$
  • D$\text{PbS} + 2\text{O}_2 \rightarrow \text{SO}_3 + \text{PbO}$

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