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Chemistry · May / June 2018 · Paper 12 · Question 16

5070Exothermic and endothermic reactions

A reaction is exothermic. Which diagram shows the correct energy profile diagram for the reaction and the correct enthalpy change?

  1. Aenergy profile diagram A with positive ΔH
  2. Benergy profile diagram B with negative ΔH
  3. Cenergy profile diagram C with positive ΔH
  4. Denergy profile diagram D with negative ΔH

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Correct answer: D. energy profile diagram D with negative ΔH

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