Chemistry 0620 · IGCSE · Reversible reactions and equilibrium

Reversible reactions and equilibrium — practice question

Methanol is made by allowing carbon monoxide and hydrogen to react in the presence of an aluminium oxide catalyst. The reaction equation is $\text{CO(g)} + 2\text{H}_2\text{(g)} \rightleftharpoons \text{CH}_3\text{OH(g)}$. This reaction is reversible, and the forward reaction is exothermic. Which alteration to the conditions would increase the yield of methanol?

  • Adecreasing the concentration of the carbon monoxide
  • Bincreasing the pressure
  • Cincreasing the rate of the reaction
  • Dincreasing the temperature

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