If L was lowered by adding a catalyst, which of the following would be correct? 70- 60- 50 40- 30- 20. 10 Reaction Coordinate The activation energy and heat of reaction would increase. The activation energy would remain constant, but the heat of reaction would decreas The activation energy would decrease, but the heat of reaction would remain constar O The activation energy and heat of reaction would decrease. Potential Energy (kl/mol)

Study the following reaction energy diagram: energy reactants products Then answer the following questions about the chemical reaction. O release Does this reaction release or absorb energy? O absorb O nelther How many transition states occur during this reaction? O yes Could this be an elementary reaction? O no If you sald this reaction could not be elementary, then how many steps are in Its mechanism? If you sald this reaction could not be elementary, then enter the number of the step in Its mechanism which Is rate- determining. For example, If the first step Is the rate- determining step, enter "1" here.

How does a catalyst influence the rate of a reaction?

as the temp of a reaction is increased the rate of the reaction increases why? (see image)

Which had the highest energy-the reactants the products or the activated complex?

What is the activation energy of the forward reaction?

20. Which one of the following will 0/1 make a reaction go slower? * Add more of the reactants Use a higher temperature Use larger pieces of reactant Add a catalyst

Classify the actions based on how they could affect a reaction rate. Rate increases Rate decreases Rate is unaffected Answer Bank decrease the concentration of a reactant decrease the surface area of a solid reactant increase the temperature add a catalyst

7. Reactions A and B were studied and found to produce the given energy diagrams. 150 150 Energy 100 (kJ/mol) 100 Energy (kJ/mol) 50 50 Reaction progress Reaction progress Reaction A Reaction B A third reaction, C was studied with a measured activation energy of 55 KJ/mol. Assume all reactions take place at the same temperature. Reaction A is slowest a. b. Reaction B is slowest c. Reaction C is slowest d. All reactions happen at the same rate.

The question is in the image.