Chemistry 5070 · O Level · Reversible reactions and equilibrium

Reversible reactions and equilibrium — practice question

Sulfur trioxide is formed in the reaction shown below. $2\text{SO}_2(g) + \text{O}_2(g) \rightleftharpoons 2\text{SO}_3(g) \qquad \Delta H = -195\ \text{kJ}$ Which change in conditions would result in a larger amount of $\text{SO}_3$ at equilibrium?

  • Aadding a catalyst
  • Bincreasing the pressure
  • Cincreasing the temperature
  • Dremoving some $\text{SO}_2$ and $\text{O}_2$

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