Which statement correctly describes the energy changesthat occur in the forward reaction?
(1) The activation energy is 10. kJ 60 and the reaction is endothermic.
(2) The activation energy is 10. kJ 40. and the reaction is exothermic.
(3) The activation energy is 50. kJ and the reaction is endothermic.
(4) The activation energy is 50kj and the reaction is exothermic.
Given the balanced equation representing a reaction: H, (g) + CL(g) - 2HCI(g) + energy Which statement describes the energy changes in this reaction?
(1) Energy is absorbed as bonds are formed, only.
(2) Energy is released as bonds are broken, only.
(3) Energy is absorbed as bonds are broken, and energy is released as bonds are formed.
(4) Energy is absorbed as bonds are formed, and energy is released as bonds are broken.