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 .................... .
Practise Edexcel GCSE Chemistry Reversible reactions and equilibria with exam-style questions for Foundation and Higher tier. 38 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
