Which describes the enthalpy change associated with an endothermic reaction?

An endothermic reaction absorbs heat from its surroundings, so its enthalpy change is positive. Since ΔH = enthalpy of products − enthalpy of reactants, a positive change means the products have greater enthalpy than the reactants. Therefore, the correct choice is “It is positive because the enthalpy of the products is greater than the enthalpy of the reactants.”

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