In a laboratory investigation, iron filings react with copper sulfate solution. The rate of this reaction is directly proportional to the concentration of the solution. The concentration is increased from 0.20 mol/dm3 to 0.60 mol/dm3.
Explain, in terms of particles, how this change in concentration affects the rate of the reaction.
127 exam-style questions on AQA GCSE Chemistry 6.1 Rate of reaction, covering 6.1.1a Calculating rates of reactions, 6.1.1b Gradient of a tangent as rate, 6.1.2 Factors which affect the rates of chemical reactions, 6.1.3 Collision theory and activation energy, and 6.1.4 Catalysts. Each one has a worked solution and a mark scheme showing where the marks go.