Chemistry 0620 · IGCSE · Exothermic and endothermic reactions

Exothermic and endothermic reactions — practice question

A reaction pathway diagram is shown. Which row gives the correct labels for X and Y and identifies the type of reaction occurring?

AX: enthalpy change; Y: activation energy; type of reaction: exothermic
BX: activation energy; Y: enthalpy change; type of reaction: endothermic
CX: activation energy; Y: enthalpy change; type of reaction: exothermic
DX: enthalpy change; Y: activation energy; type of reaction: endothermic

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