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A mixture of equal amounts of two enantiomers ____. A) is optically inactive B) is called...
10) Which of the following statements is (are) true for the compound (R)-2-butanol? A) This compound...
10) Which of the following statements is (are) true for the compound (R)-2-butanol? A) This compound is chiral. B) This compound is optically active. C) This compound has an enantiomer D) all of the above E) none of the above 11) Predict the specific rotation of the compound shown. CH нс A) It is impossible to predict; it must be determined experimentally. B) Because both asymmetric centers are R, the compound is dextrorotatory. C) Because both asymmetric centers are S,...
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...
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
7. (9 pts) (Are the following optically active or meso? meso HyCHC OH HO opticaly actve...
7. (9 pts) (Are the following optically active or meso? meso HyCHC OH HO opticaly actve active opti call active 8. (3 pts) How many stereoisomers are there of 2,3-dibromobutane? 4 sleeoisamvers (8 pts) Circle the letter of the statements that are true. a. Racemic mixtures are optically active Enantiomers have specific rotations that are equal, but have opposite signs 9. o adtc) Achiral molecules are optically inactive d Meso compounds contain equal amounts of enantiomers 4pts) Complete the Fischer...
the answers i circled are incorrect. can you give me the correct answers and explain why?...
the answers i circled are incorrect. can you give me the
correct answers and explain why?
postural de Pero ss and so Lalash, an walach asymmetric carbon as Ror S. (3) label the How many asymmetric carbon atoms are present in the following compound A) B) 1 D) 3 E) 4 2) Which of the statements below correctly describes an achiral molecule? The molecule has a nonsuperimposable mirror image. B) The molecule exhibits optical activity when it interacts with plane-polarized...
Key terms: chiral center, enantiomers, diasteriomers, meso compound, racemic mixture Part 1 - Make models of...
Key terms: chiral center, enantiomers, diasteriomers, meso compound, racemic mixture Part 1 - Make models of each of the following and give both perspective and Fischer formulas for all possible isomers and label each as chiral or achiral. Where applicable, specify as R or S each steroisomer and clearly label paint of enantimers, diasteromers and meso compounds a) The simplest amino acid glycine b) The second simplest alpha amino acid alanine c) Monosaccharide tetrose, CH_2(OH)-CH(OH)-CH(OH)-CHO d) 2, 3-Di-bromobutanes. e) 1,...
Which statement is correct regarding a racemiC mixture It is optically inactive. a) It has an...
Which statement is correct regarding a racemiC mixture It is optically inactive. a) It has an optical purity of 0%. It is a 50/50 mixture of diastereomers. b) c) d) Both a and b are true. Which of the following molecules has two stereogenic centers? H C C=C MMe OH HO H IV I and III a) b) II and IV c) I II and IV d) all of them
3. (4 pts) Complete the Fischer projection drawn below by adding the four substituents to the chiral carbon of (s)...
3. (4 pts) Complete the Fischer projection drawn below by adding the four substituents to the chiral carbon of (s)-2-methyl-3-bromo-hexane. 4. (4 pts) Draw a wedge and dash structure representing (1R 2R,3S)-1,2- dichloro3-ethylcyclohexane. 5. (4pts) 2-bromobutane is shown below. Is this (R)-2-bromobutane or (S)-2 bromobutane? 6. (6 pts) For each chiral carbon in ascorbic acid (vitamin C), shown below, assign Ror S to each stereocenter. How many stereoisomers of ascorbic acid are possible? OH HO ОН 7. (9 pts) (Are...
An attempt at synthesizing a certain optically active compound resulted in a mixture of its enantiomers. The mixtur...
An attempt at synthesizing a certain optically active compound resulted in a mixture of its enantiomers. The mixture had an observed specific rotation of +11.7. If it is known that the specific rotation of the R enantiomer is -38.9, determine the percentage of each isomer in the mixture. Number R enantiomer: % Number S enantiomer
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 statements is (are) true for the compound (R)-2-butanol? A) This compound is chiral. B) This compound is optically active. C) This compound has an enantiomer D) all of the above E) none of the above 11) Predict the specific rotation of the compound shown. CH нс A) It is impossible to predict; it must be determined experimentally. B) Because both asymmetric centers are R, the compound is dextrorotatory. C) Because both asymmetric centers are S,...
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...
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
7. (9 pts) (Are the following optically active or meso? meso HyCHC OH HO opticaly actve active opti call active 8. (3 pts) How many stereoisomers are there of 2,3-dibromobutane? 4 sleeoisamvers (8 pts) Circle the letter of the statements that are true. a. Racemic mixtures are optically active Enantiomers have specific rotations that are equal, but have opposite signs 9. o adtc) Achiral molecules are optically inactive d Meso compounds contain equal amounts of enantiomers 4pts) Complete the Fischer...
the answers i circled are incorrect. can you give me the
correct answers and explain why?
postural de Pero ss and so Lalash, an walach asymmetric carbon as Ror S. (3) label the How many asymmetric carbon atoms are present in the following compound A) B) 1 D) 3 E) 4 2) Which of the statements below correctly describes an achiral molecule? The molecule has a nonsuperimposable mirror image. B) The molecule exhibits optical activity when it interacts with plane-polarized...
Key terms: chiral center, enantiomers, diasteriomers, meso compound, racemic mixture Part 1 - Make models of each of the following and give both perspective and Fischer formulas for all possible isomers and label each as chiral or achiral. Where applicable, specify as R or S each steroisomer and clearly label paint of enantimers, diasteromers and meso compounds a) The simplest amino acid glycine b) The second simplest alpha amino acid alanine c) Monosaccharide tetrose, CH_2(OH)-CH(OH)-CH(OH)-CHO d) 2, 3-Di-bromobutanes. e) 1,...
Which statement is correct regarding a racemiC mixture It is optically inactive. a) It has an optical purity of 0%. It is a 50/50 mixture of diastereomers. b) c) d) Both a and b are true. Which of the following molecules has two stereogenic centers? H C C=C MMe OH HO H IV I and III a) b) II and IV c) I II and IV d) all of them
3. (4 pts) Complete the Fischer projection drawn below by adding the four substituents to the chiral carbon of (s)-2-methyl-3-bromo-hexane. 4. (4 pts) Draw a wedge and dash structure representing (1R 2R,3S)-1,2- dichloro3-ethylcyclohexane. 5. (4pts) 2-bromobutane is shown below. Is this (R)-2-bromobutane or (S)-2 bromobutane? 6. (6 pts) For each chiral carbon in ascorbic acid (vitamin C), shown below, assign Ror S to each stereocenter. How many stereoisomers of ascorbic acid are possible? OH HO ОН 7. (9 pts) (Are...
An attempt at synthesizing a certain optically active compound resulted in a mixture of its enantiomers. The mixture had an observed specific rotation of +11.7. If it is known that the specific rotation of the R enantiomer is -38.9, determine the percentage of each isomer in the mixture. Number R enantiomer: % Number S enantiomer
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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