Chemistry Why does the potential energy diagram for an exothermic reaction starts at a higher energy value? Asked by arwen46 12 years ago 7/24/2013 5:15 AM Last updated by anonymous 12 years ago 7/26/2013 2:10 AM
In an exothermic reaction, the products have less potential energy than the reactants had at the beginning of the reaction. This is why the potential energy diagram for an exothermic reaction starts at a higher energy value.