20. For the following reaction mechanism use the diagram below to answer each question (this is worth (6 marks) a. The overall reaction is endothermic or exothermic (circle one). b. The 2nd step in the reaction mechanism is endothermic or exothermic (circle one). is a reaction intermediate. C. d. The AH for the overall reaction in the forward direction is value). e. The slowest step in the forward direction is step 1 or step 2 (circle one). f. The step with the largest EA FORWARD is step 1 or step 2 (circle one). Ep (kJ) 25+ 23+ 20+ 12+ 7 A+B/ AA (state the