Closed system -> forward and reverse reactions -> equal rates -> equilibrium

Question 3 of 3

AQA Combined Science Higher Chemistry Paper 2 2 marks

Ammonia is produced when a mixture of nitrogen and hydrogen reacts. The equation for the reaction is: N2 (g) + 3 H2 (g) ⇌ 2 NH3 (g)

The reaction reaches equilibrium. Explain how an equilibrium is reached.

Try from memory first

Compare with the chain after you check.