In the resolution of 1-phenylethylamine, would you be able to separate the isomers if you used...
In the resolution of 1-phenylethylamine, would you be able to separate the isomers if you used racemic tartaric acid? explain why yes or no (feel free to incorporate the structures and the R/S designation if it helps to explain your answer)
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In the resolution of 1-phenylethylamine, would you be able to
separate the isomers if you used...
QUESTIONS 1. If 1 mL of racemic 1-phenylethylamine were resolved using R,R-tartaric acid, what is the...
QUESTIONS 1. If 1 mL of racemic 1-phenylethylamine were resolved using R,R-tartaric acid, what is the maximum amount (in grams) of S-1-phenylethylamine that can be recovered? Why?
Are you able to use acid base extraction to solve separate these? Suppose you steam distilled...
Are you able to use acid base extraction to solve separate
these?
Suppose you steam distilled thyme, and found that the resulting oil possessed promising antibiotic activity. To determine which chemical is the active component, you need to separate the mixture. If the major components are the chemicals shown below, what technique could you use to purify 1 g of the oil and obtain a pure sample of each compound? Explain why your chosen technique would be successful. 2. 3...
Please help with pre-lab questions. Pre-Lab Questions: 1. A sample of 2-butanol has a specific rotation...
Please help with pre-lab questions.
Pre-Lab Questions: 1. A sample of 2-butanol has a specific rotation of +3.25. Determine the optical purity (%ee) and percent composition of this sample (see Mohrig section 17.4). The specific rotation of pure (+)-2-butanol is +13.0°. 2. The equation for the formation of the diastereomeric salts is shown in the background information (performed in Part A of the procedure). Write this chemical equation in your notebook, then ALSO write a balanced equation for the formation...
5. How would you distinguish between the following compounds using high-resolution mass spectrometry? (3pts) A 6....
5. How would you distinguish between the following compounds using high-resolution mass spectrometry? (3pts) A 6. Propose three (03) possible structures that can produce the mass spectrum given below and your answer (beside carbon and hydrogen, this molecule contains only one other atom) explain 100 92 80 60 40 94 134 20 99 106 136 108 75 50 100 125 m/z Structures (3 pts) Explain (3 pts)
5. How would you distinguish between the following compounds using high-resolution mass spectrometry?...
organic elin PRE-LAB QUESTIONS 1. Would you expect 4-h Explain and include a b uld you...
organic elin PRE-LAB QUESTIONS 1. Would you expect 4-h Explain and include a b uld you expect 4-hydroxyphenylacetic acid to be soluble or insoluble in 1.0 M NaOH? d include a balanced chemical equation with your answer. Но, 4-hydroxyphenylacetic acid 2. Although testosterone and slightly soluble in methanol at h testosterone and methanol both have a free OH group, testosterone is only coluble in methanol at room temperature. Explain why this is. OH testosterone 2 Draw a flowchart (similar to...
1-4 1. What would happen if you used a water-soluble pen on the chromatography paper to...
1-4
1. What would happen if you used a water-soluble pen on the chromatography paper to mark your origin line? How would this affect the Re values? 2. A student accidently adds 17 ml of NaCl to their beaker rather than the 7 mL of NaCl they were suppose to add to their beaker. How might this mistake affect their chromatogram? Do you think they would be able to obtain any data? Briefly explain your answer. 10 3. Is it...
4. Absolute Configuration and R/S Sequence Rules. In 3 you constructed models with two stereocenters that...
4. Absolute Configuration and R/S Sequence Rules. In 3 you constructed models with two stereocenters that represented 4 stereoisomers. 2,3-Dibromobutanoic acid exemplifies such a compound, Make models for the isomers of this compound. a. Draw solid/dashed-wedge structures for the 4 possible stereoisomers and label the enantiomers and diastereomers. b. Specify the sequence priority for the substituents on carbon-2 and carbon-3. Label each structure with the proper R/S notation in the drawings above, for example (2R, 35). d. Draw Newman projections...
1.describe how you would separate a mixture of acetanilide and sand 2.water is a convenient solvent...
1.describe how you would separate a mixture of acetanilide and sand 2.water is a convenient solvent for recrsytallizing what type of compound. 3. why is fluted filter paper usually used when doing the hot filtration during a recrystallization. 4.describe how seed crystal are used in recrystallization. 5.explain the adage " like dissolve lik
Part A - Determination of number of H-NMR signals It is important to be able to recognize the significant spectroscopic differences among isomers and other compounds with a similar molecular structur...
Part A - Determination of number of H-NMR signals It is important to be able to recognize the significant spectroscopic differences among isomers and other compounds with a similar molecular structure Generally, analyzing the molecular structures and spectroscopic data to answer a few questions will help you identify how to distinguish among molecules with similar structures. The following questions are useful when using 1H-NMR to accomplish the goal: 1. How many spectroscopic signals are expected? 2. What are the expected...
Perform a literature search and give the structure of ortho-toluic acid and meta-toluic acid. Would you...
Perform a literature search and give the structure of ortho-toluic acid and meta-toluic acid. Would you be able to separate o-toluic acid from a 50:50 mixture of the two solids (ortho and meta toluic acid) using selective recrystallization? Explain your answer considering the structure of the two solids
QUESTIONS 1. If 1 mL of racemic 1-phenylethylamine were resolved using R,R-tartaric acid, what is the maximum amount (in grams) of S-1-phenylethylamine that can be recovered? Why?
Are you able to use acid base extraction to solve separate
these?
Suppose you steam distilled thyme, and found that the resulting oil possessed promising antibiotic activity. To determine which chemical is the active component, you need to separate the mixture. If the major components are the chemicals shown below, what technique could you use to purify 1 g of the oil and obtain a pure sample of each compound? Explain why your chosen technique would be successful. 2. 3...
Please help with pre-lab questions.
Pre-Lab Questions: 1. A sample of 2-butanol has a specific rotation of +3.25. Determine the optical purity (%ee) and percent composition of this sample (see Mohrig section 17.4). The specific rotation of pure (+)-2-butanol is +13.0°. 2. The equation for the formation of the diastereomeric salts is shown in the background information (performed in Part A of the procedure). Write this chemical equation in your notebook, then ALSO write a balanced equation for the formation...
5. How would you distinguish between the following compounds using high-resolution mass spectrometry? (3pts) A 6. Propose three (03) possible structures that can produce the mass spectrum given below and your answer (beside carbon and hydrogen, this molecule contains only one other atom) explain 100 92 80 60 40 94 134 20 99 106 136 108 75 50 100 125 m/z Structures (3 pts) Explain (3 pts)
5. How would you distinguish between the following compounds using high-resolution mass spectrometry?...
organic elin PRE-LAB QUESTIONS 1. Would you expect 4-h Explain and include a b uld you expect 4-hydroxyphenylacetic acid to be soluble or insoluble in 1.0 M NaOH? d include a balanced chemical equation with your answer. Но, 4-hydroxyphenylacetic acid 2. Although testosterone and slightly soluble in methanol at h testosterone and methanol both have a free OH group, testosterone is only coluble in methanol at room temperature. Explain why this is. OH testosterone 2 Draw a flowchart (similar to...
1-4
1. What would happen if you used a water-soluble pen on the chromatography paper to mark your origin line? How would this affect the Re values? 2. A student accidently adds 17 ml of NaCl to their beaker rather than the 7 mL of NaCl they were suppose to add to their beaker. How might this mistake affect their chromatogram? Do you think they would be able to obtain any data? Briefly explain your answer. 10 3. Is it...
4. Absolute Configuration and R/S Sequence Rules. In 3 you constructed models with two stereocenters that represented 4 stereoisomers. 2,3-Dibromobutanoic acid exemplifies such a compound, Make models for the isomers of this compound. a. Draw solid/dashed-wedge structures for the 4 possible stereoisomers and label the enantiomers and diastereomers. b. Specify the sequence priority for the substituents on carbon-2 and carbon-3. Label each structure with the proper R/S notation in the drawings above, for example (2R, 35). d. Draw Newman projections...
Part A - Determination of number of H-NMR signals It is important to be able to recognize the significant spectroscopic differences among isomers and other compounds with a similar molecular structure Generally, analyzing the molecular structures and spectroscopic data to answer a few questions will help you identify how to distinguish among molecules with similar structures. The following questions are useful when using 1H-NMR to accomplish the goal: 1. How many spectroscopic signals are expected? 2. What are the expected...
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