Consider the potential energy profiles for the three reactions. (1) Rank the rates (slowest to fastest) of the reactions. (2) Calculate ΔH for each reaction and determine which reaction(s) are exothermic and which reaction(s) are endothermic. Assume the reactions have roughly the same frequency factors.
a. 1 > 2 > 3; all exothermic
b. 3 > 2 > 1; 1 and 2 exothermic, 3 endothermic
c. 2 > 1 > 3; 1 endothermic, 2 and 3 exothermic
d. 1 > 3 > 2; 2 and 3 exothermic, 1 endothermic