An aqueous reaction is carried out between sodium thiosulfate solution and a limiting volume of hydrochloric acid. As the reaction proceeds, the rate of sulfur precipitation decreases.
Explain, in terms of collision theory and particles, why the rate of this reaction decreases as the reactants are consumed.
Practise Edexcel GCSE Chemistry Rates of reaction with exam-style questions for Foundation and Higher tier. 166 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.
