Quiz 3 Chapter 16 Org II - Organic Chemistry II Quiz PDF

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Organic Chemistry II Quiz ...

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Name: _________________________ Quiz 3 Take Home Show ALL work. Work neatly.

Section: _________________________ Due 09-27-2018 INDIVIDUAL WORK

Chapter 16 OPEN TEXTBOOK ONLY

Multiple Choice – Explain your answers Identify the choice that best completes the statement or answers the question. ____

1. How many chemically distinct hydrogen atoms are in the following molecule?

a. Two types b. Three types c. Four types ____

2. How many chemically distinct hydrogen atoms are in the following molecule?

a. Two types b. Three types c. Four types ____

d. Five types e. Six types

3. How many chemically distinct hydrogen atoms are in the following molecule?

a. Four types b. Five types c. Six types ____

d. Five types e. Six types

d. Seven types e. Eight types

4. Which hydrogen atom has the greatest chemical shift?

a. HA b. HB c. HC

d. HD e. HE

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d. HD e. HE

6. Which hydrogen type has the greatest integration value?

a. HA b. HB c. HC ____

Chapter 16 OPEN TEXTBOOK ONLY

5. Which hydrogen atom has the greatest chemical shift?

a. HA b. HB c. HC ____

Section: _________________________ Due 09-27-2018 INDIVIDUAL WORK

d. HD e. HE

7. What is the relative ratio of hydrogens in the following molecule?

a. b. c. d. e.

3:3:1:2:2:2:1:3:3 6:1:2:1 6:1:2:2:2:1:6 12:2:2:2:2 None (a–d) give the correct relative ratio of hydrogens.

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Chapter 16 OPEN TEXTBOOK ONLY

8. Which hydrogen type has the smallest integration value?

a. HA b. HB c. HC ____

Section: _________________________ Due 09-27-2018 INDIVIDUAL WORK

d. HD e. HE

9. What is the expected splitting pattern for the indicated hydrogen?

a. Singlet b. Doublet c. Triplet

d. Quartet e. Quintet

____ 10. What is the expected splitting pattern for the indicated hydrogen?

a. Singlet b. Doublet c. Triplet

d. Quartet e. Quintet

____ 11. What apparent splitting pattern would not be found in the 1H NMR spectrum or the following molecule?

a. Singlet b. Doublet c. Triplet

d. Quartet e. Quintet

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Chapter 16 OPEN TEXTBOOK ONLY

____ 12. Which of the following molecules would have a quartet at 3.5 ppm?

a. I b. II c. III

d. IV e. V

____ 13. Which of the following molecules would have a singlet at 2.1 ppm?

a. I b. II c. III

d. IV e. V

____ 14. HA splits the 1H NMR signal for HB by 7.4 Hz. By how much does HB split the 1H NMR signal for HA?

a. 0 Hz b. 3.7 Hz c. 7.4 Hz

d. 14.8 Hz e. Not enough information to answer

____ 15. Which will produce the largest coupling constant?

a. HA coupling to HB b. HA coupling to HC c. HB coupling to HC

d. HC coupling to HD e. HD coupling to HE

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Chapter 16 OPEN TEXTBOOK ONLY

____ 16. Which molecule will have the greatest coupling constant between HA and HB?

a. I b. II c. III

d. IV e. V

____ 17. Which molecule has a triplet of doublets in its 1H NMR spectrum?

a. I b. II c. III

d. IV e. V

____ 18. Which molecule does not have a doublet of doublets in its 1H NMR spectrum?

a. I b. II c. III

d. IV e. V

____ 19. How many distinct signals are in the 13C NMR of the following compound?

a. Four b. Five c. Six

d. Seven e. Eight

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Chapter 16 OPEN TEXTBOOK ONLY

____ 20. Which compound has four distinct signals in its 13C NMR spectrum?

a. I b. II c. III ____

a. I b. II c. III

d. IV e. V 21.

Which compound would produce the 1H NMR spectrum below?

d. IV e. V

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Chapter 16 OPEN TEXTBOOK ONLY

____ 22. Which compound would produce the given 1H NMR spectrum below?

a. I b. II c. III

d. IV e. V

____ 23. Which compound would produce the 1H NMR spectrum below?

a. I b. II c. III

d. IV e. V

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Chapter 16 OPEN TEXTBOOK ONLY

____ 24. Which compound would produce the 1H NMR spectrum below?

a. I b. II c. III

d. IV e. V

____ 25. Which compound would produce the 1H NMR spectrum below?

a. I b. II c. III

d. IV e. V

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____ 26. Which of the following is the base peak?

a. I b. II c. III

d. IV e. V

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Chapter 16 OPEN TEXTBOOK ONLY

____ 27. The mass spectrum for an unknown molecule has an M+ peak with a relative intensity of 100 and an M + 1 peak with a relative intensity of 9.905. How many carbons are in the unknown molecule? a. 1 carbon d. 10 carbons b. 5 carbons e. 100 carbons c. 9 carbons ____ 28. The mass spectrum for an unknown molecule has an M peak with a relative intensity of 50 and an M  1 peak with a relative intensity of 1.65. How many carbons are in the unknown molecule? a. One carbon d. Four carbons b. Two carbons e. Six carbons c. Three carbons ____ 29. Which type of atom is likely present in the molecule responsible for the following mass spectrum?

a. N b. F c. Cl

d. Br e. I

____ 30. Which m/z value would indicate that nitrogen was present in a sample? a. m / z 13 d. m / z  150 b. m / z  100 e. m / z  155 c. m / z  104

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