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Chemistry · Oct / Nov 2017 · Paper 11 · Question 17

5070Exothermic and endothermic reactions

Under certain conditions nitrogen reacts with oxygen to form N2O. 2N2(g) + O2(g) ⇌ 2N2O(g) The energy profile diagram for this reaction is shown. What is the activation energy for the reverse reaction?

  1. A– 447 kJ / mol
  2. B–283 kJ / mol
  3. C+141.5 kJ / mol
  4. D+283 kJ / mol

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Correct answer: D. +283 kJ / mol

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