Melanie has completed the analysis of her data for the reaction of KMnO4 with malonic acid and data for a reaction of KMnO4 with tartaric acid. She compared the activation energies, Ea, she calculated for the two reactions and found the Ea for the malonic acid reaction to be smaller than the Ea for the tartaric acid reaction. What does this mean about the magnitude of the rate constant, k, and the rate of the reaction