For the forward reaction of A+B -> C+D, which statement correctly describes the energy changes that occur?
The activation energy is 10. kJ and the reaction is endothermic.
• The activation energy is 10. kJ and the reaction is exothermic.
• The activation energy is 40. kJ and the reaction is exothermic.
The activation energy is 40. kJ and the reaction is endothermic