When sulfur dioxide and oxygen react to form sulfur trioxide, the reaction can reach a dynamic equilibrium in a closed flask.
Use words from the box to complete the sentences about dynamic equilibrium. Each word may be used once, more than once, or not at all.
backward | constant | different | equal | reversible | slower
Dynamic equilibrium can only occur when the reaction is .................... . At equilibrium, the rates of the forward and backward reactions are .................... .
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.
