Chemistry 5070 · O Level · Exothermic and endothermic reactions

Exothermic and endothermic reactions — practice question

Ammonium nitrate is dissolved in water. $\text{NH}_4\text{NO}_3(s) \xrightarrow{\text{H}_2\text{O}} \text{NH}_4\text{NO}_3(aq)$ $\Delta H = +25\,\text{kJ mol}^{-1}$ Which statements are correct?

  • A1 and 2 only
  • B1 and 3 only
  • C2 and 3 only
  • D1, 2 and 3

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