Organic Chemistry 6Th Edition By Smith - Test Bank

Organic Chemistry 6Th Edition By Smith – Test Bank

 

Instant Download – Complete Test Bank With Answers

 

 

Sample Questions Are Posted Below

 

Organic Chemistry, 6e (Smith)

Chapter 5   Stereochemistry

 

1) What is the main carbohydrate in the seeds and roots of plants?

1. A) Starch
2. B) Glucose
3. C) Cellulose
4. D) Glycogen

 

Answer:  A

Difficulty: 1 Easy

Section:  05.01

Topic:  Stereochemistry

Chapter:  05

Accessibility:  Keyboard Navigation

 

2) Which of the following statements about starch and cellulose is true?

1. A) Starch and cellulose are not stereoisomers.
2. B) In cellulose, the O atom joins two rings using one equatorial and one axial bond.
3. C) In starch, the O atom joins two rings using two equatorial bonds.
4. D) In cellulose, the O atom joins two rings using two equatorial bonds.

 

Answer:  D

Difficulty: 1 Easy

Section:  05.01

Topic:  Stereochemistry

Chapter:  05

Accessibility:  Keyboard Navigation

 

3) Which of the following statements about constitutional isomers is not true?

1. A) They have different IUPAC names.
2. B) They always have the same functional groups.
3. C) They have different physical properties.
4. D) They have different chemical properties.

 

Answer:  B

Difficulty: 1 Easy

Section:  05.02

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

Accessibility:  Keyboard Navigation

 

 

 

4) Which of the following statements about stereoisomers is not true?

1. A) Stereoisomers have identical IUPAC names except for a prefix like cis or trans.
2. B) Stereoisomers differ in configuration.
3. C) Stereoisomers always have the same functional groups.
4. D) Stereoisomers differ only in their structural formula.

 

Answer:  D

Difficulty: 1 Easy

Section:  05.02

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

Accessibility:  Keyboard Navigation

 

5) What is the relationship between the following two compounds?

 

 

1. A) Stereoisomers
2. B) Constitutional isomers
3. C) Identical
4. D) Not isomers, different compounds

 

Answer:  B

Difficulty: 1 Easy

Section:  05.02

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

 

 

 

6) What is the relationship between the following two compounds?

 

 

 

1. A) Constitutional isomers
2. B) Identical
3. C) Stereoisomers
4. D) Not isomers, different compounds

 

Answer:  A

Difficulty: 1 Easy

Section:  05.02

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

 

7) What is the relationship between the following two compounds?

 

 

1. A) Constitutional isomers
2. B) Identical
3. C) Stereoisomers
4. D) Not isomers, different compounds

 

Answer:  B

Difficulty: 1 Easy

Section:  05.02

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

 

 

 

8) What is the relationship between the following two compounds?

 

 

 

1. A) Constitutional isomers
2. B) Stereoisomers
3. C) Identical
4. D) Not isomers, different compounds

 

Answer:  B

Difficulty: 1 Easy

Section:  05.02

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

 

9) Which of the following is the definition of chirality?

1. A) The existence of a molecule with a mirror image.
2. B) The existence of a molecule with a carbon atom that has four different substituents.
3. C) The existence of a molecule that is superimposable on its mirror image.
4. D) The existence of a molecule that is not superimposable on its mirror image.

 

Answer:  D

Difficulty: 1 Easy

Section:  05.03

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

Accessibility:  Keyboard Navigation

 

10) Which of the following statements is not true?

1. A) A molecule that is superimposable on its mirror image is said to achiral.
2. B) A molecule that is not superimposable on its mirror image is said to be chiral.
3. C) A molecule that is superimposable on its mirror image is said to be chiral.
4. D) A carbon atom bonded to four different groups is a stereogenic center.

 

Answer:  C

Difficulty: 1 Easy

Section:  05.03

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

Accessibility:  Keyboard Navigation

 

11) Which of the following statements is true?

1. A) Enantiomers are mirror images that are not superimposable.
2. B) A molecule that is superimposable on its mirror image is chiral.
3. C) A chiral molecule usually contains a plane of symmetry.
4. D) An achiral molecule does not contain a plane of symmetry.

 

Answer:  A

Difficulty: 1 Easy

Section:  05.03

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

Accessibility:  Keyboard Navigation

 

12) Which of the following statements is true?

1. A) Achiral molecules usually contain a plane of symmetry.
2. B) With one tetrahedral stereogenic center, a molecule may or may not be chiral.
3. C) With two or more stereogenic centers, a molecule is always chiral.
4. D) Chiral molecules usually contain a plane of symmetry.

 

Answer:  A

Difficulty: 1 Easy

Section:  05.03

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

Accessibility:  Keyboard Navigation

 

13) Which of the following is the correct definition for a pair of enantiomers?

1. A) A pair of stereoisomers that have a plane of symmetry.
2. B) A pair of stereoisomers that are not mirror images of each other.
3. C) A pair of stereoisomers that are not superimposable mirror images of each other.
4. D) A pair of stereoisomers that are superimposable mirror images of each other.

 

Answer:  C

Difficulty: 1 Easy

Section:  05.03

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

Accessibility:  Keyboard Navigation

 

 

 

14) Which of the following molecules has a plane of symmetry?

 

 

1. A) I
2. B) II
3. C) III
4. D) IV

 

Answer:  B

Difficulty: 1 Easy

Section:  05.03

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

 

15) Which of the following statements is true?

1. A) The presence of a plane of symmetry makes a molecule chiral.
2. B) An achiral molecule must have one or more stereogenic centers.
3. C) All molecules that have stereogenic centers are chiral.
4. D) Stereoisomers that are not superimposable on their mirror image are enantiomers.

 

Answer:  D

Difficulty: 1 Easy

Section:  05.03

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

Accessibility:  Keyboard Navigation

 

 

 

16) Which of the following molecules are chiral?

 

1. cis-1,3-Dibromocyclohexane
2. 1-Bromo-1-methylcyclohexane

III. trans-1-Bromo-3-methylcyclohexane

1. cis-1-Bromo-3-methylcyclohexane

 

1. A) I, II
2. B) II, III
3. C) I, IV
4. D) III, IV

 

Answer:  D

Difficulty: 1 Easy

Section:  05.03

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

Accessibility:  Keyboard Navigation

 

17) Which of the following molecules are chiral?

 

1. 2-Chlorobutane
2. 3-Bromopentane

III. 1-Bromo-2-methylpropene

1. 2-Bromo-3-methylbutane

 

1. A) I, II
2. B) I, IV
3. C) II, III
4. D) III, IV

 

Answer:  B

Difficulty: 1 Easy

Section:  05.03

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

Accessibility:  Keyboard Navigation

 

 

 

18) Which of the following molecules are achiral?

 

 

 

1. A) II, III
2. B) I, II
3. C) I, IV
4. D) III, IV

 

Answer:  C

Difficulty: 2 Medium

Section:  05.03

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

 

19) Which of the following molecules are chiral?

 

 

 

1. A) II, III
2. B) I, II
3. C) I, IV
4. D) III, IV

 

Answer:  A

Difficulty: 2 Medium

Section:  05.03

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

 

 

 

20) How many stereogenic centers are present in ephedrine, a bronchodilator and decongestant?

 

 

 

1. A) 0
2. B) 1
3. C) 2
4. D) 3

 

Answer:  C

Difficulty: 1 Easy

Section:  05.04

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

 

21) How many stereogenic centers are present in the following compound?

 

 

1. A) 0
2. B) 1
3. C) 2
4. D) 3

 

Answer:  D

Difficulty: 1 Easy

Section:  05.04

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

 

 

 

22) How many stereogenic centers are present in fructose, a simple sugar?

 

 

 

1. A) 1
2. B) 2
3. C) 3
4. D) 4

 

Answer:  C

Difficulty: 1 Easy

Section:  05.04

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

 

23) How many stereogenic centers are present in the following compound?

 

 

1. A) 1
2. B) 2
3. C) 3
4. D) 4

 

Answer:  B

Difficulty: 1 Easy

Section:  05.04

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

 

 

 

24) How many stereogenic centers are present in menthol?

 

 

 

1. A) 1
2. B) 2
3. C) 3
4. D) 4

 

Answer:  C

Difficulty: 1 Easy

Section:  05.05

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

 

25) How many stereogenic centers are present in the following compound?

 

 

 

1. A) 1
2. B) 2
3. C) 3
4. D) 4

 

Answer:  B

Difficulty: 1 Easy

Section:  05.04

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

 

 

 

26) How many stereogenic centers are present in the following molecule?

 

 

 

1. A) 1
2. B) 2
3. C) 4
4. D) 5

 

Answer:  B

Difficulty: 2 Medium

Section:  05.04

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

 

27) How many stereoisomers are possible for a molecule with formula CH3CHBrCH(OH)CH3?

1. A) 1
2. B) 2
3. C) 3
4. D) 4

 

Answer:  D

Difficulty: 2 Medium

Section:  05.04

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

Accessibility:  Keyboard Navigation

 

 

 

28) How many stereoisomers can be drawn for a molecule with formula CH3CH(OH)CH(OH)CH3?

1. A) 1
2. B) 2
3. C) 3
4. D) 4

 

Answer:  C

Difficulty: 2 Medium

Section:  05.04

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

Accessibility:  Keyboard Navigation

 

29) What is the total number of possible stereoisomers for the following molecule?

 

 

 

1. A) 2
2. B) 4
3. C) 6
4. D) 8

 

Answer:  D

Difficulty: 2 Medium

Section:  05.04

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

 

 

 

30) How many isomers can be drawn (constitutional and stereoisomers) for dimethycyclopropane?

1. A) 2
2. B) 3
3. C) 4
4. D) 6

 

Answer:  C

Difficulty: 2 Medium

Section:  05.05

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

Accessibility:  Keyboard Navigation

 

31) How many chiral stereoisomers can be drawn for dimethycyclopropane?

1. A) 1
2. B) 2
3. C) 3
4. D) 4

 

Answer:  B

Difficulty: 2 Medium

Section:  05.05

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

Accessibility:  Keyboard Navigation

 

 

 

32) How many stereogenic centers are present in gabapentin, used clinically to treat seizures and certain types of chronic pain?

 

 

1. A) 0
2. B) 1
3. C) 2
4. D) 3

 

Answer:  A

Difficulty: 2 Medium

Section:  05.05

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

 

33) How many stereogenic centers are present in the following compound?

 

 

1. A) 0
2. B) 1
3. C) 2
4. D) 3

 

Answer:  B

Difficulty: 3 Hard

Section:  05.05

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

 

 

 

34) Rank the following groups in order of decreasing priority according to the Cahn-Ingold-Prelog system.

 

 

 

1. A) III > I > II > IV
2. B) I > II > IV > III
3. C) III > II > IV > I
4. D) III > IV > II > I

 

Answer:  D

Difficulty: 1 Easy

Section:  05.06

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

 

35) Rank the following groups in order of decreasing priority according to the Cahn-Ingold-Prelog system.

 

 

 

1. A) I > II > III > IV
2. B) II > I > IV > III
3. C) II > I > III > IV
4. D) I > II > IV > III

 

Answer:  B

Difficulty: 1 Easy

Section:  05.06

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

 

 

 

36) Rank the following groups in order of decreasing priority according to the Cahn-Ingold-Prelog system.

 

 

 

1. A) I > III > IV > II
2. B) III > IV > I > II
3. C) IV > III > I > II
4. D) IV > I > III > II

 

Answer:  C

Difficulty: 1 Easy

Section:  05.06

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

 

37) Rank the following groups in order of decreasing priority according to the Cahn-Ingold-Prelog system.

 

 

 

1. A) I > II > IV > III
2. B) IV > II > I > III
3. C) IV > I > II > III
4. D) III > II > I> IV

 

Answer:  C

Difficulty: 1 Easy

Section:  05.06

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

 

 

 

38) Rank the following groups in order of decreasing priority according to the Cahn-Ingold-Prelog system.

 

 

 

1. A) IV > III > I > II
2. B) IV > I > III > II
3. C) III > IV > I > II
4. D) II > I > III > IV

 

Answer:  A

Difficulty: 2 Medium

Section:  05.06

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

 

39) Which of the following compounds has a plane of symmetry?

 

 

 

1. A) I and II
2. B) II and III
3. C) II, III, and IV
4. D) III and IV

 

Answer:  D

Difficulty: 2 Medium

Section:  05.08

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

 

 

 

40) Which of the following structures has a different configuration from the other three?

 

 

 

1. A) I
2. B) II
3. C) III
4. D) IV

 

Answer:  A

Difficulty: 2 Medium

Section:  05.06

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

 

41) Which of the following structures has a different configuration from the other three?

 

 

 

1. A) I
2. B) II
3. C) III
4. D) IV

 

Answer:  D

Difficulty: 2 Medium

Section:  05.06

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

 

 

 

42) Which of the following structures has the S configuration?

 

 

 

1. A) Only I
2. B) Only II
3. C) Only I and II
4. D) I, II, and III

 

Answer:  C

Difficulty: 2 Medium

Section:  05.06

Topic:  Stereochemistry

Bloom’s:  3. Apply

Chapter:  05

 

43) Which of the following structures has the R configuration?

 

 

 

1. A) Only I
2. B) Only II
3. C) Only I and II
4. D) I, II, and III

 

Answer:  B

Difficulty: 2 Medium

Section:  05.06

Topic:  Stereochemistry

Bloom’s:  3. Apply

Chapter:  05

 

 

 

44) Which of the following structures has the R configuration?

 

 

 

1. A) Only I
2. B) Only II
3. C) Only I and II
4. D) I, II, and III

 

Answer:  C

Difficulty: 2 Medium

Section:  05.06

Topic:  Stereochemistry

Bloom’s:  3. Apply

Chapter:  05

 

45) Which of the following is the definition for a pair of diastereomers?

1. A) A pair of stereoisomers with stereogenic centers but is not chiral.
2. B) A pair of stereoisomers that are superimposable mirror images of each other.
3. C) A pair of stereoisomers that are not superimposable mirror images of each other.
4. D) A pair of stereoisomers that are not mirror images of each other.

 

Answer:  D

Difficulty: 1 Easy

Section:  05.07

Topic:  Stereochemistry

Bloom’s:  2. Understand

Chapter:  05

Accessibility:  Keyboard Navigation

 

 

 

46) What is the relationship between the following compounds?

 

 

 

1. A) Constitutional isomers
2. B) Diastereomers
3. C) Enantiomers
4. D) Identical

 

Answer:  B

Difficulty: 2 Medium

Section:  05.07

Topic:  Stereochemistry

Bloom’s:  3. Apply

Chapter:  05

 

47) What is the relationship between the following compounds?

 

 

 

1. A) Constitutional isomers
2. B) Diastereomers
3. C) Enantiomers
4. D) Identical

 

Answer:  C

Difficulty: 2 Medium

Section:  05.07

Topic:  Stereochemistry

Bloom’s:  3. Apply

Chapter:  05

 

 

 

48) What is the relationship between the following compounds?

 

 

 

1. A) Constitutional isomers
2. B) Diastereomers
3. C) Enantiomers
4. D) Identical

 

Answer:  B

Difficulty: 2 Medium

Section:  05.07

Topic:  Stereochemistry

Bloom’s:  3. Apply

Chapter:  05

 

49) What is the relationship between the following compounds?

 

 

 

1. A) Constitutional isomers
2. B) Diastereomers
3. C) Enantiomers
4. D) Identical

 

Answer:  D

Difficulty: 3 Hard

Section:  05.07

Topic:  Stereochemistry

Bloom’s:  3. Apply

Chapter:  05

 

 

 

50) What is the relationship between the following compounds?

 

 

 

1. A) Constitutional isomers
2. B) Diastereomers
3. C) Enantiomers
4. D) Identical

 

Answer:  B

Difficulty: 2 Medium

Section:  05.07

Topic:  Stereochemistry

Bloom’s:  3. Apply

Chapter:  05

 

51) What is the relationship between the following compounds?

 

 

 

1. A) Constitutional isomers
2. B) Diastereomers
3. C) Enantiomers
4. D) Identical

 

Answer:  C

Difficulty: 2 Medium

Section:  05.07

Topic:  Stereochemistry

Bloom’s:  3. Apply

Chapter:  05

 

 

 

52) What is the relationship between the following compounds?

 

 

 

1. A) Constitutional isomers
2. B) Diastereomers
3. C) Enantiomers
4. D) Identical

 

Answer:  A

Difficulty: 2 Medium

Section:  05.07

Topic:  Stereochemistry

Bloom’s:  3. Apply

Chapter:  05

 

53) What is the relationship between the following compounds?

 

 

 

1. A) Constitutional isomers
2. B) Diastereomers
3. C) Enantiomers
4. D) Identical

 

Answer:  B

Difficulty: 2 Medium

Section:  05.07

Topic:  Stereochemistry

Bloom’s:  3. Apply

Chapter:  05

 

 

 

54) Which of the following statements about meso compounds is not true?

1. A) A meso compound generally has a plane of symmetry.
2. B) A meso compound and its mirror image are identical.
3. C) A meso compound is achiral.
4. D) A meso compound is chiral.

 

Answer:  D

Difficulty: 2 Medium

Section:  05.08

Topic:  Stereochemistry

Bloom’s:  3. Apply

Chapter:  05

Accessibility:  Keyboard Navigation

 

55) Which of the following compounds is a meso compound?

1. A) (2R, 3S)-dichlorobutane
2. B) (2R, 3R)-dichlorobutane
3. C) (2R, 3S)-3-chloro-2-butanol
4. D) (2R, 3R)-3-chloro-2-butanol

 

Answer:  A

Difficulty: 3 Hard

Section:  05.08

Topic:  Stereochemistry

Bloom’s:  4. Analyze

Chapter:  05

Accessibility:  Keyboard Navigation

 

56) Which of the following compounds are meso?

 

 

 

1. A) Only I
2. B) Only II
3. C) I and II
4. D) Neither

 

Answer:  B

Difficulty: 3 Hard

Section:  05.08

Topic:  Stereochemistry

Bloom’s:  4. Analyze

Chapter:  05

57) Which of the following compounds can have a meso stereoisomer?

 

 

 

1. A) I
2. B) II
3. C) III
4. D) IV

 

Answer:  D

Difficulty: 3 Hard

Section:  05.08

Topic:  Stereochemistry

Bloom’s:  4. Analyze

Chapter:  05

 

58) How many stereoisomers of 1,3-dibromocyclopentane exist?

1. A) 1
2. B) 2
3. C) 3
4. D) 4

 

Answer:  C

Difficulty: 2 Medium

Section:  05.10

Topic:  Stereochemistry

Bloom’s:  4. Analyze

Chapter:  05

Accessibility:  Keyboard Navigation

 

 

 

59) Which of the following compounds does not have a plane of symmetry?

 

 

 

1. A) Only I and II
2. B) Only II
3. C) Only III and IV
4. D) Only I, II, and IV

 

Answer:  B

Difficulty: 2 Medium

Section:  05.08

Topic:  Stereochemistry

Bloom’s:  4. Analyze

Chapter:  05

 

60) Which of the following cyclic molecules is a meso compound?

 

 

 

1. A) I
2. B) II
3. C) III
4. D) IV

 

Answer:  B

Difficulty: 2 Medium

Section:  05.08

Topic:  Stereochemistry

Bloom’s:  4. Analyze

Chapter:  05

 

 

 

61) How many isomers (constitutional and stereoisomers) exist for dimethylcyclobutane?

1. A) 3
2. B) 4
3. C) 5
4. D) 6

 

Answer:  D

Difficulty: 2 Medium

Section:  05.10

Topic:  Stereochemistry

Bloom’s:  4. Analyze

Chapter:  05

Accessibility:  Keyboard Navigation

 

62) A natural product was isolated in the laboratory, and its observed rotation was +10° when measured in a 1 dm sample tube containing 1.0 g of compound in 10 mL of H2O. What is the specific rotation of this compound?

1. A) -10°
2. B) +100°
3. C) +10°
4. D) -100°

 

Answer:  B

Difficulty: 2 Medium

Section:  05.12

Topic:  Stereochemistry

Bloom’s:  5. Evaluate

Chapter:  05

Accessibility:  Keyboard Navigation

 

63) A solution containing 0.08 g/mL of a pure R enantiomer in a 1 dm polarimeter rotates plane polarized light by +4°. What is the specific rotation of the S enantiomer?

1. A) +50°
2. B) -40°
3. C) +40°
4. D) -50°

 

Answer:  D

Difficulty: 2 Medium

Section:  05.12

Topic:  Stereochemistry

Bloom’s:  5. Evaluate

Chapter:  05

Accessibility:  Keyboard Navigation

 

 

 

64) How much of the R enantiomer is present in 10 g of a mixture that has an enantiomeric excess of 30% of the S isomer?

3. A) 3.0 g
4. B) 3.5 g
5. C) 6.5 g
6. D) 7.0 g

 

Answer:  B

Difficulty: 2 Medium

Section:  05.12

Topic:  Stereochemistry

Bloom’s:  5. Evaluate

Chapter:  05

Accessibility:  Keyboard Navigation

 

65) A solution containing 0.4 g/mL of a pure S enantiomer is a 1 dm polarimeter rotates plane polarized light by +5.6°. What is the rotation of a solution containing 0.8 g/mL of the S enantiomer in the same polarimeter?

5. A) +5.6°
6. B) +11.2°
7. C) +2.8°
8. D) +1.4°

 

Answer:  B

Difficulty: 2 Medium

Section:  05.12

Topic:  Stereochemistry

Bloom’s:  5. Evaluate

Chapter:  05

Accessibility:  Keyboard Navigation

 

66) What is the percent ee of a mixture that has 70% of one enantiomer and 30% of the other?

1. A) 70
2. B) 85
3. C) 40
4. D) 30

 

Answer:  C

Difficulty: 2 Medium

Section:  05.12

Topic:  Stereochemistry

Bloom’s:  5. Evaluate

Chapter:  05

Accessibility:  Keyboard Navigation

 

 

 

67) If a mixture has an ee of 90%, what is the percentage of each enantiomer?

1. A) 65% : 35%
2. B) 55% : 45%
3. C) 80% : 20%
4. D) 95% : 5%

 

Answer:  D

Difficulty: 2 Medium

Section:  05.12

Topic:  Stereochemistry

Bloom’s:  5. Evaluate

Chapter:  05

Accessibility:  Keyboard Navigation

 

68) A reaction mixture is three parts of one enantiomer and one part of the other. What is the percent ee of this mixture?

1. A) 75
2. B) 40
3. C) 65
4. D) 50

 

Answer:  D

Difficulty: 2 Medium

Section:  05.12

Topic:  Stereochemistry

Bloom’s:  5. Evaluate

Chapter:  05

Accessibility:  Keyboard Navigation

 

 

 

69) Which of the following compounds are chiral?

 

 

1. A) I and II
2. B) II and III
3. C) III and IV
4. D) I and IV

 

Answer:  B

Difficulty: 2 Medium

Section:  05.03

Topic:  Stereochemistry

Bloom’s:  3. Apply

Chapter:  05

 

70) Which of the following compounds is identical to compound A?

 

 

1. A) I and II
2. B) II and III
3. C) I and III
4. D) II

 

Answer:  D

Difficulty: 3 Hard

Section:  05.11

Topic:  Stereochemistry

Bloom’s:  3. Apply

Chapter:  05

 

 

 

71) Give the IUPAC name for the following compound:

 

 

1. A) R-3-methylhexane
2. B) S-3-methylhexane
3. C) R-4-methylhexane
4. D) S-4-methylhexane

 

Answer:  B

Difficulty: 2 Medium

Section:  05.06

Topic:  Stereochemistry

Bloom’s:  4. Analyze

Chapter:  05

 

72) Give the IUPAC name for the following compound:

 

 

1. A) R-3-methylhexane
2. B) S-3-methylhexane
3. C) R-4-methylhexane
4. D) S-4-methylhexane

 

Answer:  A

Difficulty: 2 Medium

Section:  05.06

Topic:  Stereochemistry

Bloom’s:  4. Analyze

Chapter:  05

 

 

 

73) Give the IUPAC name for the following compound:

 

 

1. A) R-2,3-dimethylhexane
2. B) S-2,3-dimethylhexane
3. C) R-4,5-dimethylhexane
4. D) S-4,5-dimethylhexane

 

Answer:  A

Difficulty: 2 Medium

Section:  05.06

Topic:  Stereochemistry

Bloom’s:  4. Analyze

Chapter:  05

 

74) Give the IUPAC name for the following compound:

 

 

1. A) (1R,3R)-1-ethyl-3-methylcyclohexane
2. B) (1R,3S)-1-ethyl-3-methylcyclohexane
3. C) (1S,3R)-1-ethyl-3-methylcyclohexane
4. D) (1S,3S)-1-ethyl-3-methylcyclohexane

 

Answer:  A

Difficulty: 3 Hard

Section:  05.09

Bloom’s:  4. Analyze

Chapter:  05

 

 

 

75) Give the IUPAC name for the following compound:

 

 

1. A) (1R,3R)-1-ethyl-3-methylcyclohexane
2. B) (1R,3S)-1-ethyl-3-methylcyclohexane
3. C) (1S,3R)-1-ethyl-3-methylcyclohexane
4. D) (1S,3S)-1-ethyl-3-methylcyclohexane

 

Answer:  D

Difficulty: 3 Hard

Section:  05.09

Topic:  Stereochemistry

Bloom’s:  4. Analyze

Chapter:  05

 

76) Give the IUPAC name for the following compound:

 

 

1. A) (1R,2R)-1,2-dimethylcyclopentane
2. B) (1R,2S)-1,2-dimethylcyclopentane
3. C) (1S,2R)-1,2-dimethylcyclopentane
4. D) (1S,2S)-1,2-dimethylcyclopentane

 

Answer:  A

Difficulty: 3 Hard

Section:  05.09

Topic:  Stereochemistry

Bloom’s:  4. Analyze

Chapter:  05