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

Question 2 of 3

AQA Combined Science Higher Chemistry Paper 2 2 marks

Describe how a reaction reaches equilibrium. Nitrogen dioxide gas reacts to form dinitrogen tetraoxide gas. The reaction is reversible. The equation for the reaction is: 2 NO2(g) ⇌ N2O4(g)

Try from memory first

Compare with the chain after you check.