Chemistry · May / June 2019 · Paper 11 · Question 19

The equations show four reversible reactions. For which reaction would the equilibrium move to the right for both an increase in pressure and an increase in temperature?

1. AH2(g) + I2(g) ⇌ 2HI(g) — exothermic
2. B4NO(g) + 6H2O(g) ⇌ 4NH3(g) + 5O2(g) — endothermic
3. CPCl5(g) ⇌ PCl3(g) + Cl2(g) — endothermic
4. D2SO2(g) + O2(g) ⇌ 2SO3(g) — exothermic

As printed in the paper