Chemistry 9701 · AS & A Level · Equilibria

Equilibria — practice question

The methanol synthesis equation is shown below. $\text{CO}_2 + 3\text{H}_2 \rightleftharpoons \text{CH}_3\text{OH} + \text{H}_2\text{O} \qquad \Delta H = -49\,\text{kJ mol}^{-1}$ Under which conditions would the highest yield of methanol be obtained at equilibrium?

  • Ahigh pressure, $80\,^{\circ}\text{C}$
  • Bhigh pressure, $20\,^{\circ}\text{C}$
  • Clow pressure, $80\,^{\circ}\text{C}$
  • Dlow pressure, $20\,^{\circ}\text{C}$

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