When pale yellow dinitrogen tetroxide gas (N2O4\text{N}_2\text{O}_4N2O4) is sealed in a tube, it decomposes to form dark brown nitrogen dioxide gas (NO2\text{NO}_2NO2), eventually establishing a dynamic equilibrium.
Use words from the box to complete the sentences about this equilibrium. Each word may be used once, more than once, or not at all.
closed | constant | equal | increasing | open | reversible
Dynamic equilibrium can only be established and maintained if the reaction takes place in a .................... system.
Once dynamic equilibrium is reached, the concentrations of the reactants and products remain .................... .
38 exam-style questions on Edexcel GCSE Chemistry 5.2 Reversible reactions and equilibria, covering 5.2.1 Reversible reactions and dynamic equilibrium, 5.2.2 The Haber process, and 5.2.3 Changing the position of a dynamic equilibrium. Each one has a worked solution and a mark scheme showing where the marks go.