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(2) 22. Of the following, which has the highest boiling point? b) CH, CH, CH, CH CH. CH CH CH OCHCH, CH, CH, CH, CH, CH...
(4) 18. (R)-(+)-Glyceraldehyde: ну HO HC-OH A: is levorotatory. B: rotates plane-polarized light in a counterclockwise...
(4) 18. (R)-(+)-Glyceraldehyde: ну HO HC-OH A: is levorotatory. B: rotates plane-polarized light in a counterclockwise direction. C: rotates plane-polarized light in a clockwise direction. D: is racemic. (10) 19. Assign R.S configurations to each indicated stereogenic center in the molecules below. OH HO 1. Н -NH₂ MOH HO norepinephrine CEO trans-cyclopentane-1,2-diol COOH +05 H- 08 COCA mero tortor ardd FOT CH OH Blyamaldehyde D b) _
EXAM 0 would be: 1. An example of a reaction having an E,ct a. Br +Br-Br...
EXAM 0 would be: 1. An example of a reaction having an E,ct a. Br +Br-Br Br-Br Br. b. F CH4 H-FCH3 c. CH3 +CH, CH d. Br. +H-Br >CH4 CH,CH2 H-BrBr CH3-CH e. CH, +CH, 2. Which of the following is true of any (S)-enantiomer? a. It rotates plane-polarized light to the right. It rotates plane-polarized 1ight to the left. C. It is a racemic form. d. It is the mirror image of the corresponding (R)-enantiomer. e. It has...
(6) 16. Give structures for the following compounds: a) (R)-2-bromo-2-pentane b) (R.S)-2,3-dibromopentane (4) 17. Which of...
(6) 16. Give structures for the following compounds: a) (R)-2-bromo-2-pentane b) (R.S)-2,3-dibromopentane (4) 17. Which of the following is chiral? Why or why not? CH HC CH "Br
g) Which structure is Z-2-bromo-3-methyl-2-pentene? CH3 H3C CH2CH3 H C=C CH-CH,CH, CH3 CH3 Вісн. C=C CH3...
g) Which structure is Z-2-bromo-3-methyl-2-pentene? CH3 H3C CH2CH3 H C=C CH-CH,CH, CH3 CH3 Вісн. C=C CH3 Br н Br | BÁ CHẠCH, C=C CH, CHỊCH, 10) Which compounds contain stereocenters? D) 1-chloropentane II) 2-chloropentane III) 3-chloropentane IV) 1,2-dichloropentane 11) Aspartame is an artificial, non-saccharide sweetener. It is made from two amino acids phenylalanine (methyl ester) and aspartic acid. Both aminoacids have one stercocenter. Both stereocenters have S-stereoconfiguration. Which of the two structures is aspartame? H2N-C-C-N-C-0-0 CH2 CH2 c=0 HO HO...
- 1. How many stereoisomers exist for 2-chloro-3-methylpentane? 1.now 2. Which of the following substituents has...
- 1. How many stereoisomers exist for 2-chloro-3-methylpentane? 1.now 2. Which of the following substituents has the highest priority? A. -COOH B.-CHOC.-CH,OH D. -CH, 3. Which of the following have the S configuration? HO- E. only i and ii G. only ii and iii A. only i B. only ii c. only iii D. all _4. Enantiomers would have the same: A. melting point B. solubility in CCI C. rotation of plane polarized light D. all of the above E....
A. two B. four C. six D. eight 15. Which one of the following compounds has highest boiling point? I. CH3CH2CH3 II....
A. two B. four C. six D. eight 15. Which one of the following compounds has highest boiling point? I. CH3CH2CH3 II. CH3CH2OH III. CHOCH A. I B . II C. III 16. What occurs when an optically active alcohol reacts with HBr to give an alkyl halide? A complete inversion of configuration takes place at the chirality center B. incomplete and varying inversion of configuration takes place at the chirality center C. the chirality center retains its configuration D....
Which of the following has the lowest boiling point? | CHG-CH2-CHO - || . CH3-CH2-CH, CH-CH2-CH2-OH...
Which of the following has the lowest boiling point? | CHG-CH2-CHO - || . CH3-CH2-CH, CH-CH2-CH2-OH 20 CH3-CH2-CH-CH CH,CH,COOH Ovo 17. What is the product of oxidation of butanal? 1-butanol D butanoic acid C. 2-butanol d. 2-butanal e. dibutylether 18). O CE, H-C-O - CHCH, is called: methyl isopropyl ester methyl isopropyl ether methylethyl ethanoate isopropyl formate 19. Reaction of CH3-CH-CH2-COOH with CH-CH,OH produces: a. butyl ethanoate ethyl butanoate ethyl propanoate d. propyl butanoate acetyl butanoate
22. Which of the following structures has the Sconfiguration? CH2CH3 CH2CH3 HECCI ......CH н OH ну...
22. Which of the following structures has the Sconfiguration? CH2CH3 CH2CH3 HECCI ......CH н OH ну H2CH2C сна A) Only 1 B) Only II C) Only I and II D) I, II and III 23. Which of the following structures has the configuration? CH,CH, CH.CH OH ...CHHECH H HỊCHẠC \ D) I, II and III A) Only I B) Only II C) Only I and II 24. What is the relationship between the following compounds? OH om B) Diastereomers C)...
Reaction Coordinate D)2 03 is incorrect Which of the following statment about thens A) All of...
Reaction Coordinate D)2 03 is incorrect Which of the following statment about thens A) All of the hydrogen atoms are in the same plane R) There is a total of five siga hands. The H-C-H hond angles are approximately 109.5" D) The carbon atoms are sp2 hybridized The H-C-H band angles are approximately 120". Which of the following has two equatorial alkyl substituents in its most stable conformation A) 1,2-dimethylcyclohexane B) -1,3-diethylcyclohen 13-diethylcyclohexane D -1,4-diethyleyelo n e E) LI-dimethylcyclohexane 7)...
17. Which of the following statements is true? A) Rate equations that contain concentration terms includes...
17. Which of the following statements is true? A) Rate equations that contain concentration terms includes all reactants involved in a multi-step reaction. B) Rate equations that contain concentration terms includes all reactants involved in a one-step mechanism. C) Fast reactions have small rate constants and small activation energies. D) Slow reactions have large rate constants and small activation energies. E) The rate of the reaction is never affected by the energy of intermediates. 18. Which of the following makes...
(4) 18. (R)-(+)-Glyceraldehyde: ну HO HC-OH A: is levorotatory. B: rotates plane-polarized light in a counterclockwise direction. C: rotates plane-polarized light in a clockwise direction. D: is racemic. (10) 19. Assign R.S configurations to each indicated stereogenic center in the molecules below. OH HO 1. Н -NH₂ MOH HO norepinephrine CEO trans-cyclopentane-1,2-diol COOH +05 H- 08 COCA mero tortor ardd FOT CH OH Blyamaldehyde D b) _
EXAM 0 would be: 1. An example of a reaction having an E,ct a. Br +Br-Br Br-Br Br. b. F CH4 H-FCH3 c. CH3 +CH, CH d. Br. +H-Br >CH4 CH,CH2 H-BrBr CH3-CH e. CH, +CH, 2. Which of the following is true of any (S)-enantiomer? a. It rotates plane-polarized light to the right. It rotates plane-polarized 1ight to the left. C. It is a racemic form. d. It is the mirror image of the corresponding (R)-enantiomer. e. It has...
(6) 16. Give structures for the following compounds: a) (R)-2-bromo-2-pentane b) (R.S)-2,3-dibromopentane (4) 17. Which of the following is chiral? Why or why not? CH HC CH "Br
g) Which structure is Z-2-bromo-3-methyl-2-pentene? CH3 H3C CH2CH3 H C=C CH-CH,CH, CH3 CH3 Вісн. C=C CH3 Br н Br | BÁ CHẠCH, C=C CH, CHỊCH, 10) Which compounds contain stereocenters? D) 1-chloropentane II) 2-chloropentane III) 3-chloropentane IV) 1,2-dichloropentane 11) Aspartame is an artificial, non-saccharide sweetener. It is made from two amino acids phenylalanine (methyl ester) and aspartic acid. Both aminoacids have one stercocenter. Both stereocenters have S-stereoconfiguration. Which of the two structures is aspartame? H2N-C-C-N-C-0-0 CH2 CH2 c=0 HO HO...
- 1. How many stereoisomers exist for 2-chloro-3-methylpentane? 1.now 2. Which of the following substituents has the highest priority? A. -COOH B.-CHOC.-CH,OH D. -CH, 3. Which of the following have the S configuration? HO- E. only i and ii G. only ii and iii A. only i B. only ii c. only iii D. all _4. Enantiomers would have the same: A. melting point B. solubility in CCI C. rotation of plane polarized light D. all of the above E....
A. two B. four C. six D. eight 15. Which one of the following compounds has highest boiling point? I. CH3CH2CH3 II. CH3CH2OH III. CHOCH A. I B . II C. III 16. What occurs when an optically active alcohol reacts with HBr to give an alkyl halide? A complete inversion of configuration takes place at the chirality center B. incomplete and varying inversion of configuration takes place at the chirality center C. the chirality center retains its configuration D....
Which of the following has the lowest boiling point? | CHG-CH2-CHO - || . CH3-CH2-CH, CH-CH2-CH2-OH 20 CH3-CH2-CH-CH CH,CH,COOH Ovo 17. What is the product of oxidation of butanal? 1-butanol D butanoic acid C. 2-butanol d. 2-butanal e. dibutylether 18). O CE, H-C-O - CHCH, is called: methyl isopropyl ester methyl isopropyl ether methylethyl ethanoate isopropyl formate 19. Reaction of CH3-CH-CH2-COOH with CH-CH,OH produces: a. butyl ethanoate ethyl butanoate ethyl propanoate d. propyl butanoate acetyl butanoate
22. Which of the following structures has the Sconfiguration? CH2CH3 CH2CH3 HECCI ......CH н OH ну H2CH2C сна A) Only 1 B) Only II C) Only I and II D) I, II and III 23. Which of the following structures has the configuration? CH,CH, CH.CH OH ...CHHECH H HỊCHẠC \ D) I, II and III A) Only I B) Only II C) Only I and II 24. What is the relationship between the following compounds? OH om B) Diastereomers C)...
Reaction Coordinate D)2 03 is incorrect Which of the following statment about thens A) All of the hydrogen atoms are in the same plane R) There is a total of five siga hands. The H-C-H hond angles are approximately 109.5" D) The carbon atoms are sp2 hybridized The H-C-H band angles are approximately 120". Which of the following has two equatorial alkyl substituents in its most stable conformation A) 1,2-dimethylcyclohexane B) -1,3-diethylcyclohen 13-diethylcyclohexane D -1,4-diethyleyelo n e E) LI-dimethylcyclohexane 7)...
17. Which of the following statements is true? A) Rate equations that contain concentration terms includes all reactants involved in a multi-step reaction. B) Rate equations that contain concentration terms includes all reactants involved in a one-step mechanism. C) Fast reactions have small rate constants and small activation energies. D) Slow reactions have large rate constants and small activation energies. E) The rate of the reaction is never affected by the energy of intermediates. 18. Which of the following makes...
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