Chemistry 0620 · IGCSE · Exothermic and endothermic reactions

Exothermic and endothermic reactions — practice question

The energy level diagram for a reaction is displayed. Which row is correct?

  • A$\text{sign of } \Delta H = -,\ \text{overall energy change = exothermic, sign of } E_a = -$
  • B$\text{sign of } \Delta H = +,\ \text{overall energy change = endothermic, sign of } E_a = +$
  • C$\text{sign of } \Delta H = +,\ \text{overall energy change = endothermic, sign of } E_a = -$
  • D$\text{sign of } \Delta H = -,\ \text{overall energy change = exothermic, sign of } E_a = +$

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