7. Which of the following slows down the reaction rate? a) Catalytic promoters b) Homogeneous catalyst c) Catalytic poison d) Heterogeneous catalyst
Answer: (c) Homogeneous catalysis because a catalyst is a substance that boosts the rate of a reaction but does not change chemically during the process. The reactants and catalyst are in the same phase in homogeneous catalysis (i.e., liquid or gas). The activity of the catalyst is reduced by the promoter.
