Which describes the enthalpy change associated with an endothermic reaction?
• It is negative because the enthalpy of the products is greater than the enthalpy of the reactants.
• It is positive because the enthalpy of the products is greater than the enthalpy of the reactants.
• It is negative because the enthalpy of the reactants is greater than the enthalpy of the products.
• It is positive because the enthalpy of the reactants is greater than the enthalpy of the products.