Energy 12. What can be stated about the two potential energy diagrams shown below with respect to their relative rates of reaction and heat exchange? Rxn 1 Rxn 2 Energy time time 1. Reaction 1 proceeds faster than reaction 2. Reaction 1 is exothermic and reaction 2 is endothermic. 2. Reaction 1 proceeds faster than reaction 2. Reaction 1 is endothermic and reaction 2 is exothermic. 3. Reaction 1 proceeds faster than reaction 2. Both reactions are exothermic. 4. Reaction 2 proceeds faster than reaction 1. Reaction 1 is exothermic and reaction 2 is endothermic. 5. Reaction 2 proceeds faster than reaction 1. Reaction 1 is endothermic and reaction 2 is exothermic.