Organic Chemistry: A Guided Inquiry
Organic Chemistry: A Guided Inquiry
2nd Edition
ISBN: 9780618974122
Author: Andrei Straumanis
Publisher: Cengage Learning
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[画像:Practice Questions: Multiple-choice. 1. Which of the following structures has at least one chirality center? A B C F OH C D 2. Which of the following is false concerning stereoisomers? A) Enantiomers have opposite configuration at all chirality centers. B) Diastereomers have the same configuration in at least one chirality center but opposite configurations at the others. C) Meso compounds are achiral overall. D) Some meso compounds can have no chirality centers. 3. Which of the following is the correct representation of dextrorotatory during measurement of optical activity? A) R B) S C) + D) - 4. Which of the following is a stereoisomer of the compound shown below? Br Br A Br Br Br ・Br Br B Br C D 5. Which of the following substituents below has the highest Cahn-Ingold-Prelog priority? A)-NH2 B)-OCH3 C)-OH D)-CH3 A)-CH3 6. Which of the following substituents below has the lowest Cahn-Ingold-Prelog priority? D)-C(CH3)3 B)-CH2CH3 C)-CH(CH3)2 7. Which of the following compounds could rotate the plane of polarized light? OH OH Ho B 2 C OH "OH D]
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Transcribed Image Text:Practice Questions: Multiple-choice. 1. Which of the following structures has at least one chirality center? A B C F OH C D 2. Which of the following is false concerning stereoisomers? A) Enantiomers have opposite configuration at all chirality centers. B) Diastereomers have the same configuration in at least one chirality center but opposite configurations at the others. C) Meso compounds are achiral overall. D) Some meso compounds can have no chirality centers. 3. Which of the following is the correct representation of dextrorotatory during measurement of optical activity? A) R B) S C) + D) - 4. Which of the following is a stereoisomer of the compound shown below? Br Br A Br Br Br ・Br Br B Br C D 5. Which of the following substituents below has the highest Cahn-Ingold-Prelog priority? A)-NH2 B)-OCH3 C)-OH D)-CH3 A)-CH3 6. Which of the following substituents below has the lowest Cahn-Ingold-Prelog priority? D)-C(CH3)3 B)-CH2CH3 C)-CH(CH3)2 7. Which of the following compounds could rotate the plane of polarized light? OH OH Ho B 2 C OH "OH D
[画像:8. Which of the following is a meso compound? A B 9. How many chirality centers does penicillin have? OH C D H N S CH3 -N. CH3 A) 1 penicillin B) 2 C) 3 10. Which of the following has the same configuration as the compound shown below? H D) 4 CH3 CI CH2CH3 CH2CH3 CH2CH3 CH2CH3 CI CCH3 CH CC CI H H3C CI H A B CH3 H C CCH2CH3 CH3 11. Which of the following is true concerning the reaction below? CH3 CI-CI A) Cl2 serves as the electrophile in the reaction. B) This is one termination step of a radical reaction. C) This is one propagation step of a radical reaction. D) This is one initiation step of a radical reaction. H3C-CI CI- 12. What is the relationship between the pair of compounds shown below? A) constitutional isomers Br H3C Br B) enantiomers VS. Br... H3C Br C) diastereomers 3 D) identical]
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Transcribed Image Text:8. Which of the following is a meso compound? A B 9. How many chirality centers does penicillin have? OH C D H N S CH3 -N. CH3 A) 1 penicillin B) 2 C) 3 10. Which of the following has the same configuration as the compound shown below? H D) 4 CH3 CI CH2CH3 CH2CH3 CH2CH3 CH2CH3 CI CCH3 CH CC CI H H3C CI H A B CH3 H C CCH2CH3 CH3 11. Which of the following is true concerning the reaction below? CH3 CI-CI A) Cl2 serves as the electrophile in the reaction. B) This is one termination step of a radical reaction. C) This is one propagation step of a radical reaction. D) This is one initiation step of a radical reaction. H3C-CI CI- 12. What is the relationship between the pair of compounds shown below? A) constitutional isomers Br H3C Br B) enantiomers VS. Br... H3C Br C) diastereomers 3 D) identical
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