Multiple Choice
Enzymes act as catalysts to lower what aspect of a chemical reaction?
15. Chemical Kinetics
Catalyst
Back15. Chemical Kinetics
Catalyst
- Multiple ChoiceWhat is the primary benefit of using a catalyst in a chemical reaction between two substances?
- Multiple ChoiceWhich of the following energy profile diagrams best illustrates the effect of a catalyst on the rate of a chemical reaction?
- Multiple Choice
Which of the following statements is true regarding the energy diagram provided?
i. The reaction is endothermic.
ii. Activation energy would be less than + 10 kJ after a catalyst is added.
iii. The reaction absorbs energy.
iv. Activation energy would be greater than + 10 kJ after a catalyst is added.
4views - Multiple ChoiceWhen compared with the normal reaction pathway, a catalyzed reaction pathway will always have:
- Open Question
A substance that influences the reaction but does not participate in the reaction is a
- Open Question
What are the roles of hydrogen peroxide oxygen hydrogen and catalase in the following reaction?
- Open Question
A substance that accelerates any chemical reaction but is not consumed in the reaction is a _____.
- Multiple ChoiceWhich process would speed up a reaction rate by decreasing the activation energy?
- Multiple ChoiceIf a catalyst lowers the activation energy of a reaction, which of the following is most likely to occur?
- Multiple ChoiceWhich of the following substances can be used as a catalyst to speed up the decomposition of hydrogen peroxide (H_2O_2)?
- Multiple ChoiceWhich of the following statements correctly describes the effect of a catalyst on a chemical reaction?1views
- Open Question
A ___ is a substance that speeds up a chemical reaction without being used up in the reaction.
- Multiple ChoiceHow does the presence of a catalyst affect the enthalpy change (ΔH) of a chemical reaction?
- Multiple ChoiceWhat is the effect of a catalyst lowering the activation energy of a chemical reaction?