Chemistry Practice Problems Endothermic & Exothermic Reactions Practice Problems Solution: Why is melting ice an endothermic reaction?

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Solution: Why is melting ice an endothermic reaction?

Problem

Why is melting ice an endothermic reaction?

Solution

We’re being asked why melting of ice is considered an endothermic

Recall that:

• Exothermic reactionslose energy and involve bonds breaking; ΔH is negative

• Endothermic reactionsgain energy and involve bonds forming; ΔH is positive


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