Chemistry 0620 · IGCSE · Reversible reactions and equilibrium

Reversible reactions and equilibrium — practice question

Ammonia is made in the Haber process. The reaction equation is given below. $3\text{H}_2(\text{g}) + \text{N}_2(\text{g}) \rightleftharpoons 2\text{NH}_3(\text{g})$ The forward reaction gives out heat. Which temperature and pressure conditions give the greatest yield of ammonia?

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

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