Chemistry 0620 · IGCSE · Reversible reactions and equilibrium

Reversible reactions and equilibrium — practice question

The equation for producing ammonia by the Haber process is shown below. $3\text{H}_2(g) + \text{N}_2(g) \rightleftharpoons 2\text{NH}_3(g)$ The forward reaction releases heat. Which row shows the effect of the change stated on the rate of reaction and the yield of ammonia?

  • Adecrease pressure; increases; decreases
  • Bdecrease temperature; decreases; increases
  • Cincrease pressure; increases; decreases
  • Dincrease temperature; increases; increases

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