Chemistry 0620 · IGCSE · Reversible reactions and equilibrium

Reversible reactions and equilibrium — practice question

Sulfuric acid is produced through a sequence of chemical reactions, and one of these is catalysed by vanadium(V) oxide. What is the equation for the reaction that is catalysed by vanadium(V) oxide?

  • A$\text{S} + \text{O}_2 \rightarrow \text{SO}_2$
  • B$2\text{S} + 3\text{O}_2 \rightarrow 2\text{SO}_3$
  • C$2\text{SO}_2 + \text{O}_2 \rightarrow 2\text{SO}_3$
  • D$\text{SO}_3 + \text{H}_2\text{O} \rightarrow \text{H}_2\text{SO}_4$

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