Chemistry 0620 · IGCSE · Reversible reactions and equilibrium

Reversible reactions and equilibrium — practice question

Dinitrogen tetroxide, $\text{N}_2\text{O}_4$, changes into nitrogen dioxide, $\text{NO}_2$, in a reversible reaction. $\text{N}_2\text{O}_4(\text{g}) \rightleftharpoons 2\text{NO}_2(\text{g})$ The forward reaction is endothermic. What conditions produce the greatest equilibrium yield of nitrogen dioxide?

  • Apressure $2\,\text{atm}$, high temperature
  • Bpressure $2\,\text{atm}$, low temperature
  • Cpressure $50\,\text{atm}$, high temperature
  • Dpressure $50\,\text{atm}$, low temperature

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