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Chemistry · Oct / Nov 2020 · Paper 11 · Question 20

5070Exothermic and endothermic reactions

The energy profile diagram for both the catalysed and uncatalysed reactions between N2 and H2, in the Haber process, is shown. What is the activation energy for the formation of NH3 in the presence of a catalyst?

  1. AA
  2. BB
  3. CC
  4. DD

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Correct answer: C. C

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