Which statement(s) about meso compounds is (are) true? Choose all that applies: a. Meso compounds are...
Which statement(s) about meso compounds is (are) true? Choose all that applies:
| a. |
Meso compounds are optically inactive. |
|
| b. |
Meso compounds contain a plane of symmetry. |
|
| c. |
A meso compound and enantiomers are superimposable mirror images of each other. |
|
| d. |
A meso compound contains at least one chiral center. |
|
| e. |
A meso compound has same physical properties from its stereoisomers. |
Homework Answers
A meso compound is a molecule with multiple stereocenters that are superimposable on its mirror image. These uniqness lead to specific qualities that meso compounds have with other than most other stereoisomers. One such quality is the internal mirror plane.It is optically inactive.It must have at least one chiral center.Physical proerties with other sterioisomers are different .
option a.,b.,c.,d., are correct
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Which statement(s) about meso compounds is (are) true? Choose
all that applies:
a.
Meso compounds are...
Which of the following is a true statement? A. All achiral molecules are meso.
Which of the following is a true statement? A. All achiral molecules are meso. b. All chiral molecules possess a plane of symmetry. c. All molecules which posses a single asymmetric center of the S configuration are levorotatory . D. A mixture of achiral compounds will be optically inactive. E. All molecules which possess 2 or more chirality centers will be chiral.
3. Diastereomers and Meso Forms. When a molecule has two or more stereogenic centers, stereoisomers that...
3. Diastereomers and Meso Forms. When a molecule has two or more stereogenic centers, stereoisomers that are not mirror images can exist; these are called diastereoisomers. Within this general class, there are special types of stereoisomers that are always optically inactive and are called meso forms. Construct a model with four different colored balls about a carbon center. Construct another identical to the first and verify this by the superimposition test. Now remove the same colored balls, blue (C from...
9. C (Z-2-hexene d. They are all of equal stability. Choose the most stable alkene among...
9. C (Z-2-hexene d. They are all of equal stability. Choose the most stable alkene among the following a 1-hexene b. (E)-2-hexene 10. What is the relation between an enantiomer's configuration and its specific rotation? (a) Rcompounds usually are dextrorotatory with few exceptions (b) R compounds always are dextrorotatory. (c) There is no relation. (d) R compounds always are levorotatory 11. How many chiral centers are there in tartaric acid, and how many different stereoisomers exist for this acid? он...
For the following question(s) MATCH each definition to a term from the list below. Place the...
For the following question(s) MATCH each definition to a term from the list below. Place the letter of the term in the blank to the left of the definition. a. racemates b. chirality center c. chirality d. diastereomers e. enantiomers f. meso compounds g. optically active h. prochirality center i. optically inactive j. achiral ____ describes organic molecules which rotate plane-polarized light. ___ is the property of "handedness": the property of an object that causes it to be nonsuperimposable on...
Part A ring Which of the following is a true statement? All molecules which possess two...
Part A ring Which of the following is a true statement? All molecules which possess two or more chirality centers will be chiral. All molecules which possess a single chirality center of the S configuration are levorotatory. All chiral molecules possess a plane of symmetry All achiral molecules are meso. A mixture of achiral compounds will be optically inactive. Submit Request Answer OOOO O
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...
3. Diastereomers and Meso Forms. When a molecule has two or more stereogenic centers, stereoisomers that...
3. Diastereomers and Meso Forms. When a molecule has two or more stereogenic centers, stereoisomers that are not mirror images can exist; these are called diastereoisomers. Within this general class, there are special types of stereoisomers that are always optically inactive and are called meso forms. Construct a model with four different colored balls about a carbon center. Construct another identical to the first and verify this by the superimposition test. Now remove the same colored balls, blue (C from...
Match the correct term to the following structures. Choose... Choose... Choose... ÅHz NH2 - y CHO...
Match the correct term to the following structures. Choose... Choose... Choose... ÅHz NH2 - y CHO OH Choose... CHO NH2 Choose... Match the correct definitions to the terms below. Possess more than one stereocentre and are not mirror images of each other Choose... A carbon connected to 4 different groups Choose... Examples include (Z)-3-chloropent-2-ene and (E)-3-chloropent-2-ene Optically inactive compounds with 2 stereogenic centres that possess a plane of symmetry Possess the same Rf values if spotted on a TLC plate...
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...
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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...
3. Diastereomers and Meso Forms. When a molecule has two or more stereogenic centers, stereoisomers that are not mirror images can exist; these are called diastereoisomers. Within this general class, there are special types of stereoisomers that are always optically inactive and are called meso forms. Construct a model with four different colored balls about a carbon center. Construct another identical to the first and verify this by the superimposition test. Now remove the same colored balls, blue (C from...
9. C (Z-2-hexene d. They are all of equal stability. Choose the most stable alkene among the following a 1-hexene b. (E)-2-hexene 10. What is the relation between an enantiomer's configuration and its specific rotation? (a) Rcompounds usually are dextrorotatory with few exceptions (b) R compounds always are dextrorotatory. (c) There is no relation. (d) R compounds always are levorotatory 11. How many chiral centers are there in tartaric acid, and how many different stereoisomers exist for this acid? он...
For the following question(s) MATCH each definition to a term from the list below. Place the letter of the term in the blank to the left of the definition. a. racemates b. chirality center c. chirality d. diastereomers e. enantiomers f. meso compounds g. optically active h. prochirality center i. optically inactive j. achiral ____ describes organic molecules which rotate plane-polarized light. ___ is the property of "handedness": the property of an object that causes it to be nonsuperimposable on...
Part A ring Which of the following is a true statement? All molecules which possess two or more chirality centers will be chiral. All molecules which possess a single chirality center of the S configuration are levorotatory. All chiral molecules possess a plane of symmetry All achiral molecules are meso. A mixture of achiral compounds will be optically inactive. Submit Request Answer OOOO O
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...
3. Diastereomers and Meso Forms. When a molecule has two or more stereogenic centers, stereoisomers that are not mirror images can exist; these are called diastereoisomers. Within this general class, there are special types of stereoisomers that are always optically inactive and are called meso forms. Construct a model with four different colored balls about a carbon center. Construct another identical to the first and verify this by the superimposition test. Now remove the same colored balls, blue (C from...
Match the correct term to the following structures. Choose... Choose... Choose... ÅHz NH2 - y CHO OH Choose... CHO NH2 Choose... Match the correct definitions to the terms below. Possess more than one stereocentre and are not mirror images of each other Choose... A carbon connected to 4 different groups Choose... Examples include (Z)-3-chloropent-2-ene and (E)-3-chloropent-2-ene Optically inactive compounds with 2 stereogenic centres that possess a plane of symmetry Possess the same Rf values if spotted on a TLC plate...
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...
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...
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