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Chemistry · Oct / Nov 2019 · Paper 12 · Question 14

5070Exothermic and endothermic reactions

Ammonium nitrate dissolves in water. NH4NO3(s) → NH4NO3(aq) ΔH = +25 kJ / mol Which statements are correct? 1 The reaction is endothermic. 2 The water gets colder during the reaction. 3 Heat energy is absorbed by the ammonium nitrate from the water.

  1. A1 and 2 only
  2. B1 and 3 only
  3. C2 and 3 only
  4. D1, 2 and 3

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Correct answer: D. 1, 2 and 3

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