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CH Lactide is a cyelic dimer of lactic acid (2-hydroxypropanoic acid). Lactide can be used to...
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...
Lactic acid (CH,CHOHCOOH), a byproduct of cheese manufacture, can be used to make a variety of...
Lactic acid (CH,CHOHCOOH), a byproduct of cheese manufacture, can be used to make a variety of chemicals. For example, it may be hydrogenated to produce propanediol (CH,CHOHCH,OH) by the reversible reaction A total of 300 moles of a vapor containing 1:3:2 lactic acid:Hyinert (mole ratios) at a total pressure of S atm (absolute) is charged to a reactor. The temperature is such that ideal gas conditions may be assumed. The equilibrium constant for the reaction, K, is defined as: (PPD)Pw...
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...
A. Consider the following pairs of structures. Designate each chirality center as (R) or (S) and...
A. Consider the following pairs of structures. Designate each
chirality center as (R) or (S) and identify the
relationship between them by describing them as representing
enantiomers, diastereomers, constitutional isomers, or two
molecules of the same compound. Use handheld molecular models to
check your answers.
B. Tartaric acid
[HO2CCH(OH)CH(OH)CO2H] was an important
compound in the history of stereochemistry. Two naturally occurring
forms of tartaric acid are optically inactive. One optically
inactive form has a melting point of 210 − 212 °...
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...
2. During the acid catalyzed polymerization of terephthalic acid and ethylene glycol, some fraction of methanol...
2. During the acid catalyzed polymerization of terephthalic acid and ethylene glycol, some fraction of methanol (CH-OH) is incorporated, but no more ester bonds can be formed. a. Based on the above, what is the extent of reaction, p? b. How does fav determine whether a linear or network polymer is formed as p nears 1? c. Why do you believe the polymer in this reaction will be a gel-network or linear chains? d. What is fivg, the average number...
Answer every single question please don’t Leave any Quiz 2 Ch 5 I. The complete breakdown...
Answer every single question please don’t Leave any
Quiz 2 Ch 5 I. The complete breakdown of a glucose molecule yields ATP 2. The complete breakdown of a triacylglycerol molecule yields ATP 3. The electron transport chain (ETC) is an exarnple of A. Endergonic reaction B. Exergonic reaction 4. The short-term energy system is also called A. Cori cycle system C. Lactic acid system system B. ATP-PCr D. Lactate shuttle 5. How much ATP do we store? A. 10-20g B....
please only do H-M. i have done everything else. 2. During the acid catalyzed polymerization of...
please only do H-M. i have done everything else.
2. During the acid catalyzed polymerization of terephthalic acid and ethylene glycol, some fraction of methanol (CH-OH) is incorporated, but no more ester bonds can be formed. a. Based on the above, what is the extent of reaction, p? b. How does fav determine whether a linear or network polymer is formed as p nears 1? c. Why do you believe the polymer in this reaction will be a gel-network or...
1. Which of the following is an aldohexose? 2. Which of the following is a cetopentose? 3. Which of the following best d...
1.
Which of the following is an aldohexose?
2. Which of the following is a cetopentose?
3. Which of the following best describes the relationship
between D-glucose and D-fructose?
4. Which of the following is (are) L-alfohexose(s)?
5. Which of the following aldohexose(s) is (are)
dextrorotatory?
6. How many stereoisomers are possible for L-galactose? Draw
or look for its structure.
7. Which of the following conpounds is a pair of
enantiomers?
8. Draw the fisher projection for L-sedoheptulose and also...
7. The IUPAC name for the followe d in the OH controls a) 3-chloro-2-methylcyclohexanol 5-chloro-2-methylcyclohexanol 2-methyl-3-chlorocyclohexanol...
7. The IUPAC name for the followe d in the OH controls a) 3-chloro-2-methylcyclohexanol 5-chloro-2-methylcyclohexanol 2-methyl-3-chlorocyclohexanol d) 2-methyl-5 chlorocyclohexanol e) 1-chloro-4-methylcyclohexanol Which of the following cannot be an electrophile? a) H b) CH2-CH; c) 'NO ) BF; d) Fee ased on the following enery diagram, which compound is formed slowly Reaction ) B from A c) Cfrom B d) from C a) A from B b 10. Which of the following has the highest priority? -0-H -CH=CHCH -CH=NCH -SC-CH; 11....
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...
Lactic acid (CH,CHOHCOOH), a byproduct of cheese manufacture, can be used to make a variety of chemicals. For example, it may be hydrogenated to produce propanediol (CH,CHOHCH,OH) by the reversible reaction A total of 300 moles of a vapor containing 1:3:2 lactic acid:Hyinert (mole ratios) at a total pressure of S atm (absolute) is charged to a reactor. The temperature is such that ideal gas conditions may be assumed. The equilibrium constant for the reaction, K, is defined as: (PPD)Pw...
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...
A. Consider the following pairs of structures. Designate each
chirality center as (R) or (S) and identify the
relationship between them by describing them as representing
enantiomers, diastereomers, constitutional isomers, or two
molecules of the same compound. Use handheld molecular models to
check your answers.
B. Tartaric acid
[HO2CCH(OH)CH(OH)CO2H] was an important
compound in the history of stereochemistry. Two naturally occurring
forms of tartaric acid are optically inactive. One optically
inactive form has a melting point of 210 − 212 °...
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...
2. During the acid catalyzed polymerization of terephthalic acid and ethylene glycol, some fraction of methanol (CH-OH) is incorporated, but no more ester bonds can be formed. a. Based on the above, what is the extent of reaction, p? b. How does fav determine whether a linear or network polymer is formed as p nears 1? c. Why do you believe the polymer in this reaction will be a gel-network or linear chains? d. What is fivg, the average number...
Answer every single question please don’t Leave any
Quiz 2 Ch 5 I. The complete breakdown of a glucose molecule yields ATP 2. The complete breakdown of a triacylglycerol molecule yields ATP 3. The electron transport chain (ETC) is an exarnple of A. Endergonic reaction B. Exergonic reaction 4. The short-term energy system is also called A. Cori cycle system C. Lactic acid system system B. ATP-PCr D. Lactate shuttle 5. How much ATP do we store? A. 10-20g B....
please only do H-M. i have done everything else.
2. During the acid catalyzed polymerization of terephthalic acid and ethylene glycol, some fraction of methanol (CH-OH) is incorporated, but no more ester bonds can be formed. a. Based on the above, what is the extent of reaction, p? b. How does fav determine whether a linear or network polymer is formed as p nears 1? c. Why do you believe the polymer in this reaction will be a gel-network or...
1.
Which of the following is an aldohexose?
2. Which of the following is a cetopentose?
3. Which of the following best describes the relationship
between D-glucose and D-fructose?
4. Which of the following is (are) L-alfohexose(s)?
5. Which of the following aldohexose(s) is (are)
dextrorotatory?
6. How many stereoisomers are possible for L-galactose? Draw
or look for its structure.
7. Which of the following conpounds is a pair of
enantiomers?
8. Draw the fisher projection for L-sedoheptulose and also...
7. The IUPAC name for the followe d in the OH controls a) 3-chloro-2-methylcyclohexanol 5-chloro-2-methylcyclohexanol 2-methyl-3-chlorocyclohexanol d) 2-methyl-5 chlorocyclohexanol e) 1-chloro-4-methylcyclohexanol Which of the following cannot be an electrophile? a) H b) CH2-CH; c) 'NO ) BF; d) Fee ased on the following enery diagram, which compound is formed slowly Reaction ) B from A c) Cfrom B d) from C a) A from B b 10. Which of the following has the highest priority? -0-H -CH=CHCH -CH=NCH -SC-CH; 11....
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