For a certain reversible reaction, the product yield rises • when the temperature is raised; • when the pressure is lowered. Which equation might represent this reversible reaction?
- A$\text{CH}_4(g) + \text{H}_2\text{O}(g) \rightleftharpoons 3\text{H}_2(g) + \text{CO}(g)$ $\Delta H = +206\,\text{kJ mol}^{-1}$
- B$4\text{NH}_3(g) + 3\text{O}_2(g) \rightleftharpoons 2\text{N}_2(g) + 6\text{H}_2\text{O}(g)$ $\Delta H = -227\,\text{kJ mol}^{-1}$
- C$2\text{NO}_2(g) \rightleftharpoons \text{N}_2\text{O}_4(g)$ $\Delta H = -58\,\text{kJ mol}^{-1}$
- D$3\text{O}_2(g) \rightleftharpoons 2\text{O}_3(g)$ $\Delta H = +143\,\text{kJ mol}^{-1}$