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Rates of reaction

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Question 100

A student compares the rate of reaction between marble chips (calcium carbonate) and hydrochloric acid of different concentrations. The reaction is significantly faster when using 2.0 mol/dm3 hydrochloric acid compared to 0.5 mol/dm3 hydrochloric acid.

Explain, in terms of particles, why increasing the concentration increases the rate of reaction.

[1]

Rates of reaction Questions

  1. GCSE
  2. /Chemistry
  3. /Rates of reaction

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.

Question bank