For the equilibrium reaction below, which conditions result in the greatest yield of ammonia? $\text{N}_2(g) + 3\text{H}_2(g) \rightleftharpoons 2\text{NH}_3(g)$ $\Delta H^\circ = -92\,\text{kJ mol}^{-1}$
- Acatalyst absent, high pressure, low temperature
- Bcatalyst absent, low pressure, high temperature
- Ccatalyst present, high pressure, high temperature
- Dcatalyst present, low pressure, low temperature