Chemistry 0620 · IGCSE · Reversible reactions and equilibrium

Reversible reactions and equilibrium — practice question

Sulfur trioxide is formed in this reversible reaction: $2\text{SO}_2\text{(g)} + \text{O}_2\text{(g)} \rightleftharpoons 2\text{SO}_3\text{(g)}$. The forward reaction is exothermic. Under what conditions is the equilibrium yield of sulfur trioxide greatest?

  • Ahigh pressure, high temperature
  • Bhigh pressure, low temperature
  • Clow pressure, high temperature
  • Dlow pressure, low temperature

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