Displacement Reactions Release Energy

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🔥 Displacement Reactions Release Energy

Two energy level diagrams, one above the other. Top, exothermic: the products are below the reactants, an Ea arrow runs from the reactant level up to the peak of the curve, and the delta H arrow points down. Bottom, endothermic: the products are above the reactants, the peak is higher, Ea runs from the reactant level to the peak, and the delta H arrow points up.

Figure 2: Energy level diagrams for exothermic and endothermic reactions

Displacement reactions are exothermic — they release energy because stronger bonds form in the products than those broken in the reactants. This is why the reaction mixture warms up when a more reactive metal is added to a salt solution.

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