Chemistry 0620 · IGCSE · Reversible reactions and equilibrium

Reversible reactions and equilibrium — practice question

Chlorine may be produced using the reaction below. This reaction is exothermic. $\text{4HCl(g)} + \text{O}_2\text{(g)} \rightleftharpoons \text{2H}_2\text{O(g)} + \text{2Cl}_2\text{(g)}$. Which alteration increases the equilibrium yield of chlorine?

  • Aadding more $\text{HCl(g)}$
  • Badding more $\text{H}_2\text{O(g)}$
  • Cdecreasing the pressure
  • Dincreasing the temperature

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