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4 marksRates of Reaction

CAPE Chemistry Unit 1 · 2008 · Paper 2 · Question 2(c)(i)

In addition to concentration, catalysts and temperature also affect reaction rates.

Using suitable well-labelled diagrams, explain how EACH of the following affects reaction rates: Catalysts

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Other parts of this question

  1. 2(a)On the grid provided on page 7, plot a graph of the concentration of butyl chloride, [C₄H₉Cl] on the y-axis against time in seconds, on the x-axis.[4 marks]
  2. 2(b)Using your graph, estimate the concentration of butyl chloride at t = 400 s.[1 mark]
  3. 2(c)(ii)Using suitable well-labelled diagrams, explain how EACH of the following affects reaction rates: Temperature[4 marks]
  4. 2(d)Name TWO industrial processes in which catalysts are used.[2 marks]

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