Ammonia is produced in an exothermic reaction. $\text{N}_2(\text{g}) + 3\text{H}_2(\text{g}) \rightleftharpoons 2\text{NH}_3(\text{g})$ What effect does a lower temperature have on the speed of ammonia formation and on the equilibrium yield of ammonia?
- Arate of formation decreases; equilibrium yield decreases
- Brate of formation decreases; equilibrium yield increases
- Crate of formation increases; equilibrium yield decreases
- Drate of formation increases; equilibrium yield increases