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

Atoms, molecules and stoichiometry — practice question

On burning, sulfur produces a gaseous substance X, which may be oxidised to form a gas Y. Gas Y then reacts with water to give product Z. Which row correctly gives the oxidation states of sulfur in X, Y and Z?

  • A$-2, +4, +4$
  • B$-2, +4, +6$
  • C$+4, +6, +4$
  • D$+4, +6, +6$

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