Homework Answers
For having same melting points, the isomers should have same chemical environment and same physical properties (except for their ability to rotate polarized light). Enantiomers are isomers that are mirror images of each other and have the same melting points because they have the same chemical environments and physical properties. Therefore, (+)-Tartaric Acid and (-)-Tartaric Acid are enantiomers which have same melting points.
Option A
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0 Which of these tartaric acid isomers will have the same melting point? (A) (+)-tartaric acid...
Tartaric acid is a molecule with three stereoisomers, D-(-)-tartaric acid, L-(+)-tartaric acid, and meso-tartaric acid. The...
Tartaric acid is a molecule with three stereoisomers, D-(-)-tartaric acid, L-(+)-tartaric acid, and meso-tartaric acid. The synthetic form of tartaric acid (the product produced in a laboratory) has an optical rotation of 0°. The meso isomer is also optically inactive. But, the melting points of the synthetic tartaric acid and the meso-tartaric acid are very different. (a) Is it possible that the synthetic form of tartaric acid is the meso isomer? Why or why not? (b) Why is the meso...
Challenge Problem 5.52 Tartare od OZCCH(OH)CH(OH)COM) was an important compound in the history of stereochemistry, Two...
Challenge Problem 5.52 Tartare od OZCCH(OH)CH(OH)COM) was an important compound in the history of stereochemistry, Two naturally occurring forms of tartaric acid are optically inactive. One optically nactive form has a melting point of 210-212°C, the other has a melting point of 140°C. The inactive tartanic acid with a melting point of 210-212c can be separated into two optically AR +12 active forms of tartanic acid with the same melting point (168-170°c). One optically active tartani adala -12 h and...
Q3. Fill in the following blanks with the correct answer (7 Marks) 1. Which of the...
Q3. Fill in the following blanks with the correct answer (7 Marks) 1. Which of the following process will lead to an optically inactive product A. Racemization B. Emiperization C. Asymmetric synthesis D. None of these 2. Have many optical isomers does tartaric acid have ? A. One B. Two C. three D. Four 3. Which of the following compounds exhibits geometrical isomerism A. Butyne B. 2-butene C. Isobutylene D. None of these 4. Witch of the following object is...
Trans fatty acids have a higher melting point than their cis isomers because: a. they are...
Trans fatty acids have a higher melting point than their cis isomers because: a. they are bent due to the trans configuration b. they contain more carbon atoms c. they contain fewer carbon atoms d. the trans configuration affects the pKa of the carboxylic acid group, e. or of some other reason?
Trans fatty acids have a higher melting point than their cis isomers because: a. they are...
Trans fatty acids have a higher melting point than their cis isomers because: a. they are bent due to the trans configuration b. they contain more carbon atoms c. they contain fewer carbon atoms d. the trans configuration affects the pKa of the carboxylic acid group e. or of some other reason?
Which of the following statement is true? A. Two diastereomers always have the same melting point.B....
Which of the following statement is true? A. Two diastereomers always have the same melting point.B. A mesocompound and its corresponding racemic mixture always have the same melting point.C. An enantiomer and its corresponding racemic mixture always have the same melting point.D. None of the above.
OH How many chiral centers are there in tartaric acid, and how many different stereoisomers exist...
OH How many chiral centers are there in tartaric acid, and how many different stereoisomers exist for this acid? (a) 2 chiral centers; 2 isomers HO (b) 1 chiral center; 1 isomer (c) 2 chiral centers; 4 isomers (d) 2 chiral centers; 3 isomers YOU OH tartaric acid
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...
7. How are these two compounds related to each other: same compound, structural isomers, enantiomers diastereomers?...
7. How are these two compounds related to each other: same compound, structural isomers, enantiomers diastereomers? сH, сн, Answer OH HO н- H он но -н Н- CH, CH, 8. How are these two compounds related to each other: same compound, structural isomers, enantiomers, diastereomers? сH,он CH,OH Answer: Но Н- Он н Н OH но- -н CH сH, 9. (R)-tartaric acid has a specific rotation of +12.0 degrees. a) What is the specific rotation of (S)-tartaric acid? b) What is...
If you have two compounds that have the same melting point, using melting point determination, how...
If you have two compounds that have the same melting point, using melting point determination, how will you confirm whether the two compounds are the same or different?
Challenge Problem 5.52 Tartare od OZCCH(OH)CH(OH)COM) was an important compound in the history of stereochemistry, Two naturally occurring forms of tartaric acid are optically inactive. One optically nactive form has a melting point of 210-212°C, the other has a melting point of 140°C. The inactive tartanic acid with a melting point of 210-212c can be separated into two optically AR +12 active forms of tartanic acid with the same melting point (168-170°c). One optically active tartani adala -12 h and...
Q3. Fill in the following blanks with the correct answer (7 Marks) 1. Which of the following process will lead to an optically inactive product A. Racemization B. Emiperization C. Asymmetric synthesis D. None of these 2. Have many optical isomers does tartaric acid have ? A. One B. Two C. three D. Four 3. Which of the following compounds exhibits geometrical isomerism A. Butyne B. 2-butene C. Isobutylene D. None of these 4. Witch of the following object is...
OH How many chiral centers are there in tartaric acid, and how many different stereoisomers exist for this acid? (a) 2 chiral centers; 2 isomers HO (b) 1 chiral center; 1 isomer (c) 2 chiral centers; 4 isomers (d) 2 chiral centers; 3 isomers YOU OH tartaric acid
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...
7. How are these two compounds related to each other: same compound, structural isomers, enantiomers diastereomers? сH, сн, Answer OH HO н- H он но -н Н- CH, CH, 8. How are these two compounds related to each other: same compound, structural isomers, enantiomers, diastereomers? сH,он CH,OH Answer: Но Н- Он н Н OH но- -н CH сH, 9. (R)-tartaric acid has a specific rotation of +12.0 degrees. a) What is the specific rotation of (S)-tartaric acid? b) What is...
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