AP Chemistry Quiz: Unit 5

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1. What is the rate of law of this reaction? *

1 point

2. *

1 point

I only

I and II only

II and III only

I, II, III

3. *

1 point

II only

I and III only

II and III only

I, II, and III

4. *

1 point

II only

I and III only

II and III only

I, II, and III

5. What is the net ionic equation for the equation below? *

1 point

6. Calculate how much time does it take to produce 21 grams of H20 *

1 point

70 s

35 s

21 s

6.3 s

7. A (aq)+ B (aq) → C (aq) + H2O *

1 point

8. Which of the following will increase the reaction rates? *

1 point

I only

I and II only

I and III only

I, II, and III

9. Given the following mechanisms, determine the equation for the overall reaction: *

1 point

10. Given the mechanisms and overall equation, find the missing step *

1 point

11. Given the mechanisms and overall equation, find the missing step: *

1 point

12. What is the expected rate law according to the following proposed multi-step mechanism under the steady state approximation? *

1 point

13. Which of the following statements are FALSE about catalysts? *

1 point

I only

II and III only

I and III only

All of the above

14. Which of the following graphs represent a zeroth order reaction? *

1 point

15. Which of the following graphs correspond with the straight line plot for the rate constant of a second order reaction? *

1 point

16. *

1 point

0.019 min

13.86 min

34.65 min

138.6 min

17. The graph below describes the change in potential energy in the chemical reaction XY + Z → X + YZ . The forward reaction is __(I)__, while the reverse reaction is __(II)__. *

1 point

I: endothermic ; II: endothermic

I: endothermic ; II: exothermic

I: exothermic ; II: endothermic

I: exothermic ; II: exothermic

18. Which of the following best describes the strength of bonds? *

1 point

XY has the strongest bond

YZ has the strongest bond

XYZ has the strongest bond

XY and YZ the same bond strength

19. *

1 point

I only

II only

I and II only

I and III only

20. What does the collision model state? *

1 point

A chemical reaction can occur only when reactant molecules collide

A chemical reaction can occur only when the reactant molecules collide with less than a certain amount of kinetic energy and in the proper orientation.

A chemical reaction can occur only when the reactant molecules collide with a certain amount of kinetic energy and in the proper orientation.

A chemical reaction can occur only when the reactant molecules collide with more than a certain amount of kinetic energy and in the proper orientation.

21. Which of the following potential energy diagrams best describe the reaction? *

1 point

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