For which of the following reactions is product formation favoured at low pressure and low temperature?

  • A
    $CO_{2(g)} + C_{(s)} \rightleftharpoons 2CO_{(g)}; \quad \Delta H^{\circ} = 172.5 \ kJ$
  • B
    $CO_{(g)} + 2H_{2(g)} \rightleftharpoons CH_3OH_{(g)}; \quad \Delta H^{\circ} = -21.7 \ kJ$
  • C
    $2O_{3(g)} \rightleftharpoons 3O_{2(g)}; \quad \Delta H^{\circ} = -285 \ kJ$
  • D
    $H_{2(g)} + I_{2(g)} \rightleftharpoons 2HI_{(g)}; \quad \Delta H^{\circ} = -9.4 \ kJ$

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