\text { 1. The following reaction has an } \mathrm{E}_{\mathrm{a}} \text { of }+120 \mathrm{~kJ} \text { and a } \Delta \mathrm{H} \text { of }+80 \mathrm{~kJ}: 2 \mathrm{~A}+\mathrm{B} \rightarrow

2 \mathrm{C}+\mathrm{D} a) Draw and label a potential energy diagram for this reaction (with a scale).Label Ea, AH, transition state, reactants, and products. b) Is this reaction endothermic or exothermic? c) Calculate the activation energy for the reverse reaction. d) What is the AH for the reverse reaction?