Organic Chemistry 4th Edition By Janice Smith - Test Bank Instant Download - Complete Test Bank With Answers Sample Questions Are Posted Below Chapter 5: Stereochemistry 1. What is the main carbohydrate in the seeds and roots of plants? A) Starch B) Glucose C) Cellulose D) Glycogen 2. …
$19.99
Organic Chemistry 4th Edition By Janice Smith – Test Bank
Instant Download – Complete Test Bank With Answers
Sample Questions Are Posted Below
Chapter 5: Stereochemistry
| 1. | What is the main carbohydrate in the seeds and roots of plants? |
| A) Starch B) Glucose C) Cellulose D) Glycogen |
| 2. | Which of the following statements about starch and cellulose is true? | |
| A) | Starch and cellulose are not stereoisomers. | |
| B) | In cellulose, the O atom joins two rings using one equatorial and one axial bond. | |
| C) | In starch, the O atom joins two rings using two equatorial bonds. | |
| D) | In cellulose, the O atom joins two rings using two equatorial bonds. | |
| 3. | Which of the following statements about constitutional isomers if not true? | |
| A) | They have different IUPAC names. | |
| B) | They always have the same functional groups. | |
| C) | They have different physical properties. | |
| D) | They have different chemical properties. | |
| 4. | Which of the following statements about stereoisomers is not true? | |
| A) | Stereoisomers have identical IUPAC names except for a prefix like cis or trans. | |
| B) | Stereoisomers differ in configuration. | |
| C) | Stereoisomers always have the same functional groups. | |
| D) | Stereoisomers differ only in their structural formula. | |
| 5. | What is the relationship between the following two compounds?
|
|||
| A) | Stereoisomers | C) | Identical | |
| B) | Constitutional isomers | D) | Not isomers, different compounds | |
| 6. | What is the relationship between the following two compounds?
|
|||
| A) | Constitutional isomers | C) | Stereoisomers | |
| B) | Identical | D) | Not isomers, different compounds | |
| 7. | What is the relationship between the following two compounds?
|
|||
| A) | Constitutional isomers | C) | Stereoisomers | |
| B) | Identical | D) | Not isomers, different compounds | |
| 8. | What is the relationship between the following two compounds?
|
|||
| A) | Constitutional isomers | C) | Identical | |
| B) | Stereoisomers | D) | Not isomers, different compounds | |
| 9. | Which of the following is the definition of chirality? | |
| A) | The existence of a molecule with a mirror image. | |
| B) | The existence of a molecule with a carbon atom that has four different substituents. | |
| C) | The existence of a molecule that is superimposable on its mirror image. | |
| D) | The existence of a molecule that is not superimposable on its mirror image. | |
| 10. | Which of the following statements is not true? | |
| A) | A molecule that is superimposable on its mirror image is said to achiral. | |
| B) | A molecule that is not superimposable on its mirror image is said to be chiral. | |
| C) | A molecule that is superimposable on its mirror image is said to be chiral. | |
| D) | A carbon atom bonded to four different groups is a stereogenic center. | |
| 11. | Which of the following statements is true? | |
| A) | Enantiomers are mirror images that are not superimposable. | |
| B) | A molecule that is superimposable on its mirror image is chiral. | |
| C) | A chiral molecule usually contains a plane of symmetry. | |
| D) | An achiral molecule does not contain a plane of symmetry. | |
| 12. | Which of the following statements is true? | |
| A) | Achiral molecules usually contain a plane of symmetry. | |
| B) | With one tetrahedral stereogenic center, a molecule may or may not be chiral. | |
| C) | With two or more stereogenic centers, a molecule is always chiral. | |
| D) | Chiral molecules usually contain a plane of symmetry. | |
| 13. | Which of the following is the correct definition for a pair of enantiomers? | |
| A) | A pair of stereoisomers that have a plane of symmetry. | |
| B) | A pair of stereoisomers that are not mirror images of each other. | |
| C) | A pair of stereoisomers that are not superimposable mirror images of each other. | |
| D) | A pair of stereoisomers that are superimposable mirror images of each other. | |
| 14. | Which of the following molecules has a plane of symmetry?
|
| A) I B) II C) III D) IV |
| 15. | Which of the following statements is true? | |
| A) | The presence of a plane of symmetry makes a molecule chiral. | |
| B) | An achiral molecule must have one or more stereogenic centers. | |
| C) | All molecules that have stereogenic centers are chiral. | |
| D) | Stereoisomers that are not superimposable on their mirror image are enantiomers. | |
| 16. | Which of the following molecules are chiral?
I. cis-1,3-Dibromocyclohexane II. 1-Bromo-1-methylcyclohexane III. trans-1-Bromo-3-methylcyclohexane IV. cis-1-Bromo-3-methylcyclohexane |
| A) I, II B) II, III C) I, IV D) III, IV |
| 17. | Which of the following molecules are chiral?
I. 2-Chlorobutane II. 3-Bromopentane III. 1-Bromo-2-methylpropene IV. 2-Bromo-3-methylbutane |
| A) I, II B) I, IV C) II, III D) III, IV |
| 18. | Which of the following molecules are achiral?
|
| A) II, III B) I, II C) I, IV D) III, IV |
| 19. | Which of the following molecules are chiral?
|
| A) II, III B) I, II C) I, IV D) III, IV |
| 20. | How many stereogenic centers are present in ephedrine, a bronchodilator and decongestant?
|
| A) 0 B) 1 C) 2 D) 3 |
| 21. | How many stereogenic centers are present in the following compound?
|
| A) 0 B) 1 C) 2 D) 3 |
| 22. | How many stereogenic centers are present in fructose, a simple sugar?
|
| A) 1 B) 2 C) 3 D) 4 |
| 23. | How many stereogenic centers are present in the following compound?
|
| A) 1 B) 2 C) 3 D) 4 |
| 24. | How many stereogenic centers are present in menthol?
|
| A) 1 B) 2 C) 3 D) 4 |
| 25. | How many stereogenic centers are present in the following compound?
|
| A) 1 B) 2 C) 3 D) 4 |
| 26. | How many stereogenic centers are present in the following molecule?
|
| A) 1 B) 2 C) 4 D) 5 |
| 27. | How many stereoisomers are possible for a molecule with formula CH3CHBrCH(OH)CH3? |
| A) 1 B) 2 C) 3 D) 4 |
| 28. | How many stereoisomers can be drawn for a molecule with formula CH3CH(OH)CH(OH)CH3? |
| A) 1 B) 2 C) 3 D) 4 |
| 29. | What is the total number of possible stereoisomers for the following molecule?
|
| A) 2 B) 4 C) 6 D) 8 |
| 30. | How many isomers can be drawn (constitutional and stereoisomers) for dimethycyclopropane? |
| A) 2 B) 3 C) 4 D) 6 |
| 31. | How many chiral stereoisomers can be drawn for dimethycyclopropane? |
| A) 1 B) 2 C) 3 D) 4 |
| 32. | How many stereogenic centers are present in gabapentin, used clinically to treat seizures and certain types of chronic pain?
|
| A) 0 B) 1 C) 2 D) 3 |
| 33. | How many stereogenic centers are present in the following compound?
|
| A) 0 B) 1 C) 2 D) 3 |
| 34. | Rank the following groups in order of decreasing priority according to the Cahn-Ingold-Prelog system.
|
|||
| A) | III > I > II > IV | C) | III > II > IV > I | |
| B) | I > II > IV > III | D) | III > IV > II > I | |
| 35. | Rank the following groups in order of decreasing priority according to the Cahn-Ingold-Prelog system.
|
|||
| A) | I > II > III > IV | C) | II > I > III > IV | |
| B) | II > I > IV > III | D) | I > II > IV > III | |
| 36. | Rank the following groups in order of decreasing priority according to the Cahn-Ingold-Prelog system.
|
|||
| A) | I > III > IV > II | C) | IV > III > I > II | |
| B) | III > IV > I > II | D) | IV > I > III > II | |
| 37. | Rank the following groups in order of decreasing priority according to the Cahn-Ingold-Prelog system.
|
|||
| A) | I > II > IV > III | C) | IV > I > II > III | |
| B) | IV > II > I > III | D) | III > II > I> IV | |
| 38. | Rank the following groups in order of decreasing priority according to the Cahn-Ingold-Prelog system.
|
|||
| A) | IV > III > I > II | C) | III > IV > I > II | |
| B) | IV > I > III > II | D) | II > I > III > IV | |
| 39. | Which of the following compounds has a plane of symmetry?
|
| A) I and II B) II and III C) II, III and IV D) III and IV |
| 40. | Which of the following structures has a different configuration from the other three?
|
| A) I B) II C) III D) IV |
| 41. | Which of the following structures has a different configuration from the other three?
|
| A) I B) II C) III D) IV |
| 42. | Which of the following structures has the S configuration?
|
| A) Only I B) Only II C) Only I and II D) I, II and III |
| 43. | Which of the following structures has the R configuration?
|
| A) Only I B) Only II C) Only I and II D) I, II and III |
| 44. | Which of the following structures has the R configuration?
|
| A) Only I B) Only II C) Only I and II D) I, II and III |
| 45. | Which of the following is the definition for a pair of diastereomers? | |
| A) | A pair of stereoisomers with stereogenic centers which is not chiral. | |
| B) | A pair of stereoisomers that are superimposable mirror images of each other. | |
| C) | A pair of stereoisomers that are not superimposable mirror images of each other. | |
| D) | A pair of stereoisomers that are not mirror images of each other. | |
| 46. | What is the relationship between the following compounds?
|
| A) Constitutional isomers B) Diastereomers C) Enantiomers D) Identical |
| 47. | What is the relationship between the following compounds?
|
| A) Constitutional isomers B) Diastereomers C) Enantiomers D) Identical |
| 48. | What is the relationship between the following compounds?
|
| A) Constitutional isomers B) Diastereomers C) Enantiomers D) Identical |
| 49. | What is the relationship between the following compounds?
|
| A) Constitutional isomers B) Diastereomers C) Enantiomers D) Identical |
| 50. | What is the relationship between the following compounds?
|
| A) Constitutional isomers B) Diastereomers C) Enantiomers D) Identical |
| 51. | What is the relationship between the following compounds?
|
| A) Constitutional isomers B) Diastereomers C) Enantiomers D) Identical |
| 52. | What is the relationship between the following compounds?
|
| A) Constitutional isomers B) Diastereomers C) Enantiomers D) Identical |
| 53. | What is the relationship between the following compounds?
|
| A) Constitutional isomers B) Diastereomers C) Enantiomers D) Identical |
| 54. | Which of the following statements about meso compounds is not true? | |
| A) | A meso compound generally has a plane of symmetry. | |
| B) | A meso compound and its mirror image are identical. | |
| C) | A meso compound is achiral. | |
| D) | A meso compound is chiral. | |
| 55. | Which of the following compounds is a meso compound? | |||
| A) | (2R, 3S)-dichlorobutane | C) | (2R, 3S)-3-chloro-2-butanol | |
| B) | (2R, 3R)-dichlorobutane | D) | (2R, 3R)-3-chloro-2-butanol | |
| 56. | Which of the following compounds are meso?
|
| A) Only I B) Only II C) I and II D) Neither |
| 57. | Which of the following compounds can have a meso stereoisomer?
|
| A) I B) II C) III D) IV |
| 58. | How many stereoisomers of 1,3-dibromocyclopentane exist? |
| A) 1 B) 2 C) 3 D) 4 |
| 59. | Which of the following compounds does not have a plane of symmetry?
|
| A) Only I and II B) Only II C) Only III and IV D) Only I, II and IV |
| 60. | Which of the following cyclic molecules is a meso compound?
|
| A) I B) II C) III D) IV |
| 61. | How many isomers (constitutional and stereoisomers) exist for dimethylcyclobutane? |
| A) 3 B) 4 C) 5 D) 6 |
| 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? |
| A) -10° B) +100° C) +10° D) -100° |
| 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? |
| A) +50° B) -40° C) +40° D) -50° |
| 64. | How much of the R enantiomer is present in 10 g of a mixture which has an enantiomeric excess of 30% of the S isomer? |
| A) 3.0 g B) 3.5 g C) 6.5 g D) 7.0 g |
| 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. |
| A) +5.6° B) +11.2° C) +2.8° D) +1.4° |
| 66. | What is the percent ee of a mixture that has 70% of one enantiomer and 30% of the other? |
| A) 70 B) 85 C) 40 D) 30 |
| 67. | If a mixture has an ee of 90%, what is the percentage of each enantiomer? |
| A) 65% : 35% B) 55% : 45% C) 80% : 20% D) 95% : 5% |
| 68. | A reaction mixture is three parts of one enantiomer and one part of the other. What is the percent ee of this mixture? |
| A) 75 B) 40 C) 65 D) 50 |
Answer Key
| 1. | A |
| 2. | D |
| 3. | B |
| 4. | D |
| 5. | B |
| 6. | A |
| 7. | B |
| 8. | B |
| 9. | D |
| 10. | C |
| 11. | A |
| 12. | A |
| 13. | C |
| 14. | B |
| 15. | D |
| 16. | D |
| 17. | B |
| 18. | C |
| 19. | A |
| 20. | C |
| 21. | D |
| 22. | C |
| 23. | B |
| 24. | C |
| 25. | B |
| 26. | B |
| 27. | D |
| 28. | C |
| 29. | D |
| 30. | C |
| 31. | B |
| 32. | A |
| 33. | B |
| 34. | D |
| 35. | B |
| 36. | C |
| 37. | C |
| 38. | A |
| 39. | D |
| 40. | A |
| 41. | D |
| 42. | C |
| 43. | B |
| 44. | C |
| 45. | D |
| 46. | B |
| 47. | C |
| 48. | B |
| 49. | D |
| 50. | B |
| 51. | C |
| 52. | A |
| 53. | B |
| 54. | D |
| 55. | A |
| 56. | B |
| 57. | D |
| 58. | C |
| 59. | B |
| 60. | B |
| 61. | D |
| 62. | B |
| 63. | D |
| 64. | B |
| 65. | B |
| 66. | C |
| 67. | D |
| 68. | D |
Original price was: $30.00.$20.00Current price is: $20.00.
Original price was: $30.00.$20.00Current price is: $20.00.
Original price was: $30.00.$20.00Current price is: $20.00.
Original price was: $30.00.$20.00Current price is: $20.00.
Original price was: $30.00.$20.00Current price is: $20.00.
Original price was: $30.00.$20.00Current price is: $20.00.
