In which of these equilibria does an increase in pressure favour the forward reaction?
- A$2\text{HI}(g) \rightleftharpoons \text{H}_2(g) + \text{I}_2(g)$
- B$\text{N}_2\text{O}_4(g) \rightleftharpoons 2\text{NO}_2(g)$
- C$2\text{NO}(g) + \text{O}_2(g) \rightleftharpoons 2\text{NO}_2(g)$
- D$\text{PCl}_5(g) \rightleftharpoons \text{PCl}_3(g) + \text{Cl}_2(g)$