1.1. Ammonia is manufactured by the Haber process. The forward reaction is exothermic

Complete the chemical equation for this reaction.

N₂​(g) + .......... H₂​(g) ⇌ ......... NH₃​(g) ΔH < 0

1.2. Nitrogen is a reactant in the Haber process.

Complete the dot-and-cross diagram in Fig 2.1 to show the electron arrangement in a molecule of nitrogen, N₂. Show outer shell electrons only.

Fig 2.1

1.3. The forward reaction is exothermic. Complete Fig 2.2 to show the reaction pathway diagram for this reaction. Include labels for the:

• reactants and products

• enthalpy change of reaction, ΔH

• activation energy, E_a​

Fig 2.2

1.4. An engineer places nitrogen and hydrogen in a sealed reactor. The reaction reaches equilibrium. State two features of a reversible reaction at equilibrium.

1.5. The engineer changes the conditions of the reactor.

Complete Table 2.1 to show the effect of changing the conditions on the equilibrium yield of ammonia and on the rate of the forward reaction. Use only the words increases, decreases, or no change.

Table 2.1