Chemistry 0620 · IGCSE · Exothermic and endothermic reactions

Exothermic and endothermic reactions — practice question

Hydrogen undergoes reaction with chlorine as shown by the equation: $\text{H}_2(\text{g}) + \text{Cl}_2(\text{g}) \rightarrow 2\text{HCl}(\text{g})$. This reaction gives out heat. Which statement about this reaction is correct?

  • AEnergy absorbed for bond breaking is greater than the energy released in bond making.
  • BEnergy absorbed for bond breaking is less than the energy released in bond making.
  • CEnergy released in bond breaking is greater than the energy absorbed in bond making.
  • DEnergy released in bond breaking is less than the energy absorbed in bond making.

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