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Which statement is correct regarding a racemiC mixture It is optically inactive. a) It has an...
10) Which of the following are optically inactive? A) a 50-50 mixture of Rand Senantiomers B)...
10) Which of the following are optically inactive? A) a 50-50 mixture of Rand Senantiomers B) a racemic mixture C) every achiral compound D) a meso compound E) all the above 11) If (S)-glyceraldehyde has a specific rotation of -8.7, what is the specific rotation of (R)-glyceraldehyde? A) +8.7 B) -8.7 C) 0.0 D) cannot be determined from the information given 12) What is the relationship between the following compounds? HCI CH - CH₂ CH3 HEC HCI HEC X сін...
M Which of the following is true regarding 50/50 mixture of the following molecules? Br Br...
M Which of the following is true regarding 50/50 mixture of the following molecules? Br Br BE Br Optically inactive one compound. Optically active one compound. Optically inactive pair of enantiomers. Optically active pair of enantiomers. Optically inactive pair of diastereomers. Optically active pair of diastereomers. Question 11 (1 point) bromo-4-ethylhept-3-ene?
A mixture of equal amounts of two enantiomers ____. A) is optically inactive B) is called...
A mixture of equal amounts of two enantiomers ____. A) is optically inactive B) is called a racemic mixture C) implies that the enantiomers are meso forms D) both A and B E) none of the above Label each asymmetric carbon in the compound below as R or S.
Question 3 (1 point) What is the relationship between the following molecules? Br Br Same compound....
Question 3 (1 point) What is the relationship between the following molecules? Br Br Same compound. Pair of enantiomers. Pair of diastereomers. Unrelated. Two of the above. Question 4 (1 point) Saved Which of the following molecules has stereogenic center with configurati Br estion 4 (1 point) ✓ Saved Which of the following molecules has stereogenic center with configuration R? Br o Br Question 5 (1 point) Which of the following is true regarding 50/50 mixture of the following molecules?...
Which of the solutions listed below would be optically inactive? Select all that applies. a. A...
Which of the solutions listed below would be optically inactive? Select all that applies. a. A solution of a meso compound. b. A solution of a single enantiomer. C. A solution of an achiral organic compound. d. A racemic mixture
44) How many stereogenic centers are present in the following compound A) B1 02 03 45)...
44) How many stereogenic centers are present in the following compound A) B1 02 03 45) Which of the following cyclic molecules is a meso compound? IV POH D) IV B) II C) III 46) What is the relationship between the following compounds? A) Identical C) Enantiomers B) Constitutional isomers D) Diastereomers 47) Which of the following structures has the configuration? OH нса H C CH.CH CHCH H₂C OH HẠCHÚC C) Only II D) Only 1 A) Only I B)...
17. Which of the following statements is true? ado on dai Jal A) Achiral molecules usually...
17. Which of the following statements is true? ado on dai Jal 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 18. Which of the following is the correct definition for a pair of enantiomers? A) A pair of stereoisomers that have a plane of...
NUM 55) How many stereogenic centers are present in the following compound County Name: it Name: A) 1 B) 2 ourse: D...
NUM 55) How many stereogenic centers are present in the following compound County Name: it Name: A) 1 B) 2 ourse: D) 4 Section: 56) Which of the following molecules are achiral? Exam D) I, II A) I, IV B) II, III C) III, IV 57) 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) II, III B) III, IV C) 1, IV D) 1, 58) Which of the following statements is true?...
(d) Give the structures of the polymers which can be formed from the following monomers. HOOH...
(d) Give the structures of the polymers which can be formed from the following monomers. HOOH + Ho но — он (iii) 4. (a) What is the general structure of an a-amino acid. (6) (b) Give an example of amino acids with (i) Hydrophobic, (ii) Polar (iii) acidic (basic) side chains (look up a reference). Ginecological chalins (cookeo 5. (a) What is the necessary and sufficient condition that a molecule is chiral (optically active)? (b) What is a stereocentre? How...
8. Indicate whether each of the following statements is true or false. If a statement is...
8. Indicate whether each of the following statements is true or false. If a statement is false, explain why a) Two structural isomers may be chiral. : True b) A compound must be chiral in order to have an enantiomer. True c) A chiral compound with an asymmetric carbon atom designated always has a positive optical rotation. False (R) as d) Mirror-image molecules are always enantiomers. False chiral. False e) All compounds with asymmetric carbon atoms are f)The relative configuration...
10) Which of the following are optically inactive? A) a 50-50 mixture of Rand Senantiomers B) a racemic mixture C) every achiral compound D) a meso compound E) all the above 11) If (S)-glyceraldehyde has a specific rotation of -8.7, what is the specific rotation of (R)-glyceraldehyde? A) +8.7 B) -8.7 C) 0.0 D) cannot be determined from the information given 12) What is the relationship between the following compounds? HCI CH - CH₂ CH3 HEC HCI HEC X сін...
M Which of the following is true regarding 50/50 mixture of the following molecules? Br Br BE Br Optically inactive one compound. Optically active one compound. Optically inactive pair of enantiomers. Optically active pair of enantiomers. Optically inactive pair of diastereomers. Optically active pair of diastereomers. Question 11 (1 point) bromo-4-ethylhept-3-ene?
A mixture of equal amounts of two enantiomers ____. A) is optically inactive B) is called a racemic mixture C) implies that the enantiomers are meso forms D) both A and B E) none of the above Label each asymmetric carbon in the compound below as R or S.
Question 3 (1 point) What is the relationship between the following molecules? Br Br Same compound. Pair of enantiomers. Pair of diastereomers. Unrelated. Two of the above. Question 4 (1 point) Saved Which of the following molecules has stereogenic center with configurati Br estion 4 (1 point) ✓ Saved Which of the following molecules has stereogenic center with configuration R? Br o Br Question 5 (1 point) Which of the following is true regarding 50/50 mixture of the following molecules?...
Which of the solutions listed below would be optically inactive? Select all that applies. a. A solution of a meso compound. b. A solution of a single enantiomer. C. A solution of an achiral organic compound. d. A racemic mixture
44) How many stereogenic centers are present in the following compound A) B1 02 03 45) Which of the following cyclic molecules is a meso compound? IV POH D) IV B) II C) III 46) What is the relationship between the following compounds? A) Identical C) Enantiomers B) Constitutional isomers D) Diastereomers 47) Which of the following structures has the configuration? OH нса H C CH.CH CHCH H₂C OH HẠCHÚC C) Only II D) Only 1 A) Only I B)...
17. Which of the following statements is true? ado on dai Jal 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 18. Which of the following is the correct definition for a pair of enantiomers? A) A pair of stereoisomers that have a plane of...
NUM 55) How many stereogenic centers are present in the following compound County Name: it Name: A) 1 B) 2 ourse: D) 4 Section: 56) Which of the following molecules are achiral? Exam D) I, II A) I, IV B) II, III C) III, IV 57) 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) II, III B) III, IV C) 1, IV D) 1, 58) Which of the following statements is true?...
(d) Give the structures of the polymers which can be formed from the following monomers. HOOH + Ho но — он (iii) 4. (a) What is the general structure of an a-amino acid. (6) (b) Give an example of amino acids with (i) Hydrophobic, (ii) Polar (iii) acidic (basic) side chains (look up a reference). Ginecological chalins (cookeo 5. (a) What is the necessary and sufficient condition that a molecule is chiral (optically active)? (b) What is a stereocentre? How...
8. Indicate whether each of the following statements is true or false. If a statement is false, explain why a) Two structural isomers may be chiral. : True b) A compound must be chiral in order to have an enantiomer. True c) A chiral compound with an asymmetric carbon atom designated always has a positive optical rotation. False (R) as d) Mirror-image molecules are always enantiomers. False chiral. False e) All compounds with asymmetric carbon atoms are f)The relative configuration...
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