In the industrial production of sulfur trioxide, sulfur dioxide reacts with oxygen in a closed system to establish a reversible reaction:
2SO2(g)+O2(g)⇌2SO3(g) 2\text{SO}_2(\text{g}) + \text{O}_2(\text{g}) \rightleftharpoons 2\text{SO}_3(\text{g}) 2SO2(g)+O2(g)⇌2SO3(g)Which of the following statements is correct when this reaction reaches dynamic equilibrium?
The rate of the forward reaction is greater than the rate of the reverse reaction.
The amounts of sulfur dioxide, oxygen, and sulfur trioxide remain constant.
The concentrations of all reactants and products become equal.
The forward and reverse reactions stop completely.
Practise Edexcel GCSE Chemistry Dynamic equilibria with exam-style questions for Foundation and Higher tier. 30 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.
