1a. A sample of 2-butanol has a specific rotation of +3.25°. Determine the % ee and...
1a. A sample of 2-butanol has a specific rotation of +3.25°. Determine the % ee and the molecular composition of this sample. The specific rotation of pure (+)-2-butanol is +13.0.
1b. A sample of 2-butanol has a specific rotation of –9.75°. Determine the % ee and the molecular composition of this sample.
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1a. A sample of 2-butanol has a specific rotation of +3.25°.
Determine the % ee and...
1. A sample of 2-butanol has a specific rotation of +3.25'. Determine the % ee and...
1. A sample of 2-butanol has a specific rotation of +3.25'. Determine the % ee and the molecular composition of this sample. The specific rotation of pure (+)-2-butanol is +13.0°. (0.5 point) sofie 2. A sample of 2-butanol (see question 1) has a specific rotation of -9.75°. Determine the % ee and the molecular composition of this sample. (0.5 point)
Prelab Questions: 1. Calculate the observed specific rotation for the following molecule given the following informatio...
Prelab Questions: 1. Calculate the observed specific rotation for the following molecule given the following information: Observed rotation = +15.6 Path length = 1 dm Concentration = 0.5 g/mL (These calculation were performed at 25 °C using a Sodium “D” lamp) 2. A sample of chiral 2-butanol has a specific rotation of -3.25º. Determine the % ee and the molecular composition of this sample (% of one enantiomer and % of opposite enantiomer). The specific rotation of pure (-)-2-butanol is...
The specific rotation of pure (-)-2-butanol is -13.5°. If a mixture has a specific rotation of...
The specific rotation of pure (-)-2-butanol is -13.5°. If a mixture has a specific rotation of +7o, how much of each form (+ and-) is present and what is the e.e. of the mixture? 21. 22. (-)-Lactic acid has a specific rotation of -3.8°. What is the specific rotation of a solution containing 7.5 g of (--lactic acid and 2.5 g of (+)-lactic acid? 23. Draw the Fischer projection of (2R,4R)-2,4-dibromopentane. w? And draw the 24. How many diastereomers are...
A sample of limonene has a specific rotation of +71.3 R-(+)-limonene [dD = + 125.6" and,...
A sample of limonene has a specific rotation of +71.3 R-(+)-limonene [dD = + 125.6" and, S-(-)-limonene [a]D--1 22. 1 ®. What is the % ee? Number %ee What is the molecular composition of this same sample? Number s isomer = 1 % 1Somer Number R isomer-
6. Optically pure (-)-2-butanol has the R configuration and [a] = -13.52º. Optically pure (-)-2-iodobutane has...
6. Optically pure (-)-2-butanol has the R configuration and [a] = -13.52º. Optically pure (-)-2-iodobutane has the R configuration and (a) = -15.9º. A sample of 2-butanol with specific rotation of +11.1° was found in reaction with hydrogen iodide in tetrahydrofuran solvent to yield 2-iodobutane of specific rotation-10.9º. a. Does the reaction proceed with predominantly retention or inversion of configuration? Explain how you determined your answer. b. Determine the optical purity (%OP) which is also the enantiomeric excess (%ee) of...
- +13.52, and (R)-(-)-2-butanol, (a)" --13.52, with a measured specific rotation (a) = +6.76? What is...
- +13.52, and (R)-(-)-2-butanol, (a)" --13.52, with a measured specific rotation (a) = +6.76? What is the percent composition of a mixture of (S)-+)-2-butanol. [a] 67% (R), 339 (5) . 75%(R. 25 (5) 50% (R), 5006 (5) 3345R1.67% (5) e 25% (R), 754 (5)
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...
The specific rotation of D-phenylalanine is +34 degrees. a synthesized sample of phenylalanine has a specific rotation o...
The specific rotation of D-phenylalanine is +34 degrees. a synthesized sample of phenylalanine has a specific rotation of -15 degrees. What is the enantiomeric excess of the sample? What is the composition of the sample in D-phenylalanine and L-phenylalanine (it's enantiomer)?
5.42 The specific rotation of (S)-2-butanol is +13.5. If 1.00 g of its enantiomer is dissolved...
5.42 The specific rotation of (S)-2-butanol is +13.5. If 1.00 g of its enantiomer is dissolved in 10.0 mL of ethanol and placed in a sample cell with a length of 1.00 dm, what observed rotation do you expect?
? What is the enantiomeric excess of an adrenaline sample that has a specific rotation of...
? What is the enantiomeric excess of an adrenaline sample that has a specific rotation of - 47.7? pure adrenaline has a specific rotation of -53, 4 pts 0) The observed rotation of 4.0 grams of compound in a 40 ml of a solution in a polarimeter Tube 20 cm dong is + 14.40 What is the specific rotation of the compound. 4 pts. Idm = 100m [a] E d Сх
1. A sample of 2-butanol has a specific rotation of +3.25'. Determine the % ee and the molecular composition of this sample. The specific rotation of pure (+)-2-butanol is +13.0°. (0.5 point) sofie 2. A sample of 2-butanol (see question 1) has a specific rotation of -9.75°. Determine the % ee and the molecular composition of this sample. (0.5 point)
Prelab Questions: 1. Calculate the observed specific rotation for the following molecule given the following information: Observed rotation = +15.6 Path length = 1 dm Concentration = 0.5 g/mL (These calculation were performed at 25 °C using a Sodium “D” lamp) 2. A sample of chiral 2-butanol has a specific rotation of -3.25º. Determine the % ee and the molecular composition of this sample (% of one enantiomer and % of opposite enantiomer). The specific rotation of pure (-)-2-butanol is...
The specific rotation of pure (-)-2-butanol is -13.5°. If a mixture has a specific rotation of +7o, how much of each form (+ and-) is present and what is the e.e. of the mixture? 21. 22. (-)-Lactic acid has a specific rotation of -3.8°. What is the specific rotation of a solution containing 7.5 g of (--lactic acid and 2.5 g of (+)-lactic acid? 23. Draw the Fischer projection of (2R,4R)-2,4-dibromopentane. w? And draw the 24. How many diastereomers are...
A sample of limonene has a specific rotation of +71.3 R-(+)-limonene [dD = + 125.6" and, S-(-)-limonene [a]D--1 22. 1 ®. What is the % ee? Number %ee What is the molecular composition of this same sample? Number s isomer = 1 % 1Somer Number R isomer-
6. Optically pure (-)-2-butanol has the R configuration and [a] = -13.52º. Optically pure (-)-2-iodobutane has the R configuration and (a) = -15.9º. A sample of 2-butanol with specific rotation of +11.1° was found in reaction with hydrogen iodide in tetrahydrofuran solvent to yield 2-iodobutane of specific rotation-10.9º. a. Does the reaction proceed with predominantly retention or inversion of configuration? Explain how you determined your answer. b. Determine the optical purity (%OP) which is also the enantiomeric excess (%ee) of...
- +13.52, and (R)-(-)-2-butanol, (a)" --13.52, with a measured specific rotation (a) = +6.76? What is the percent composition of a mixture of (S)-+)-2-butanol. [a] 67% (R), 339 (5) . 75%(R. 25 (5) 50% (R), 5006 (5) 3345R1.67% (5) e 25% (R), 754 (5)
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...
5.42 The specific rotation of (S)-2-butanol is +13.5. If 1.00 g of its enantiomer is dissolved in 10.0 mL of ethanol and placed in a sample cell with a length of 1.00 dm, what observed rotation do you expect?
? What is the enantiomeric excess of an adrenaline sample that has a specific rotation of - 47.7? pure adrenaline has a specific rotation of -53, 4 pts 0) The observed rotation of 4.0 grams of compound in a 40 ml of a solution in a polarimeter Tube 20 cm dong is + 14.40 What is the specific rotation of the compound. 4 pts. Idm = 100m [a] E d Сх
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