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5 marksRates of Reaction

CSEC Chemistry · May/June 2017 · Paper 2 · Question 1(d)

Using the axes in Figure 2 on page 7, plot a graph of rate of reaction versus mass of manganese(IV) oxide from the information in Table 1. One point has already been plotted. Circle the plotted points on the graph, and draw the line of best fit.

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Other parts of this question

  1. 1(a)The rate of the reaction for EACH quantity of catalyst used was calculated and recorded in Table 1. Use the balances shown in Figure 1 on page 5 to complete…[5 marks]
  2. 1(b)Define the term 'rate of reaction'.[1 mark]
  3. 1(c)Write a balanced chemical equation to show the decomposition of hydrogen peroxide.[2 marks]
  4. 1(e)(i)Using your graph, describe the relationship between the rate of reaction and the mass of the catalyst.[2 marks]
  5. 1(e)(ii)Using your graph, determine the rate of reaction using 3.0 g of the catalyst.[1 mark]
  6. 1(e)(iii)Determine the volume of oxygen produced after 10 s using the value obtained from (e) (ii).[1 mark]
  7. 1(f)Complete and label the energy profile diagram in Figure 3 to show how a catalyst affects the rate of reaction.[2 marks]
  8. 1(g)Draw a labelled diagram of the apparatus (including reagents) that was used to conduct the experiment and collect the gas.[4 marks]
  9. 1(h)List TWO other factors which can affect the rate of reaction.[2 marks]

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