[填空题]
The temperature of dilute sh z dnd5g7-;iiulphuric acid rises when it reacts with zinc accordi:j qxn ha9.in9hsfpb/js) u; (ng to the followiu q9.(ibahhx: nn/ jj;p)s 9sfng chemical equation:
1.State whether the reaction is .
2.Explain what this implies in terms of the chemical potential energy contained in the reactants and the products.
3.Draw an energy level diagram for this reaction.
