When an effective catalyst is added to the reactant mixture, the reaction rate increases. sketch energy profiles both uncatalyzed and catalyzed reactions (e. g. use solid and dash lines). label reactants, products, transition states. the change of enthalpy, and activation energies of both reactions on the diagranm (8 pts.) a one-step exothermic chemical reaction a + b ? c +d occurs very slowly being uncatalyzed. reaction progress