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4 marksRates of Reaction

CAPE Chemistry Unit 1 · 2013 · Paper 2 · Question 5(a)(i)

This question focuses on kinetics and equilibria, specifically reaction rates.

With the aid of appropriate Boltzmann distribution curves, (using the axes provided on page 12) describe the effect of Temperature on reaction rates.

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Other parts of this question

  1. 5(a)(ii)With the aid of appropriate Boltzmann distribution curves, (using the axes provided on page 12) describe the effect of Catalyst on reaction rates.[3 marks]
  2. 5(b)(i)Use the information from the table to deduce the rate equation and calculate the overall order of the reaction.[5 marks]
  3. 5(b)(ii)a)Calculate the rate constant.[2 marks]
  4. 5(b)(ii)b)Calculate the initial rate of the reaction when [S₂O₃²⁻]₀ = 0.13 mol dm⁻³ and [I⁻]₀ = 0.32 mol dm⁻³.[1 mark]

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