Chemistry 0620 · IGCSE · Exothermic and endothermic reactions

Exothermic and endothermic reactions — practice question

The reaction pathway diagram for a reaction is displayed. Which row correctly identifies the activation energy, $E_a$, and the enthalpy change, $\Delta H$, for this reaction?

    Worked solution & mark scheme

    This 1-mark question has a full step-by-step worked solution and mark scheme.

    • Full mark scheme, point by point
    • Step-by-step worked solution
    • Write your answer & get it marked instantly by AI