Question

Describe how you would use the information depicted in the potential energy diagram below to determine the enthalpy change of the reaction and if the reaction is endothermic or exothermic.

Answer 1

The products have more potential energy than the reactants, which means that forming the product required the input of some energy. Hope that's helpful.

Answer 2

The reaction is endothermic because the energy of the products is higher than the energy of the reactants. The reaction requires energy to be put in. If it were opposite, where the energy of the reactants was higher than the energy of the products, the reaction would be exothermic. The reaction releases energy.

Answer 3

The energy of the products are higher than the energy of the reactants, making the reactions endothermic, the reaction requires energy to be put into it. If the reaction was exothermic, the reactants would be higher in energy than the energy of the products.