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Prelab Questions: 1. Calculate the observed specific rotation for the following molecule given the following informatio...
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)
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.
question #4 Prelab Question #1: (answer the three prelab questions on this printed handout; this question...
question #4
Prelab Question #1: (answer the three prelab questions on this printed handout; this question is 2) related to polarimetry of Limonene): A student dissolves 0.20g of pure R-Limonene in a total of 5 mL of ethanol using a volumetric flask. The student fills a 2 dm polarimetry tube with this solution and observes a rotation of + 8.2° from that sample. Calculate the specific rotation of the student's sample of R-Limonene. 102.5 Formula to use: [a] = 1075...
A 0.120 M solution of an enantiomerically pure chiral compound D has an observed rotation of...
A 0.120 M solution of an enantiomerically pure chiral compound D has an observed rotation of + 0.26 degree in a 1-dm sample container. The molar mass of the compound is 153.0 g/mol. What is the specific rotation of D? What is the observed rotation if this solut is mixed with an equal volume of a solution t is 0.120 M in L, the enantiomer of D? What is the observed rotation if the solution of D is diluted with...
A 0.110 M solution of an enantiomerically pure chiral compound D has an observed rotation of...
A 0.110 M solution of an enantiomerically pure chiral compound D has an observed rotation of 0.18° in a 1-dm sample container. The molar mass of the compound is 174.0 g/mol. (a) What is the specific rotation of D? (b) What is the observed rotation if this solution is mixed with an equal volume of a solution that is 0.110 M in L, the enantiomer of D? (c) What is the observed rotation if the solution of D is diluted...
A 0.140 M solution of an enantiomerically pure chiral compound D has an observed rotation of...
A 0.140 M solution of an enantiomerically pure chiral compound D has an observed rotation of 0.18° in a 1-dm sample container. The molar mass of the compound is 150.0 g/mol. (a) What is the specific rotation of D? (b) What is the observed rotation if this solution is mixed with an equal volume of a solution that is 0.140 M in L, the enantiomer of D? (c) What is the observed rotation if the solution of D is diluted...
A 0.110 M solution of an enantiomerically pure chiral compound D has an observed rotation of...
A 0.110 M solution of an enantiomerically pure chiral compound D has an observed rotation of +0.24° in a 1-dm sample container. The molar mass of the compound is 144.0 g/mol. (a) What is the specific rotation of D? (b) What is the observed rotation if this solution is mixed with an equal volume of a solution that is 0.110 M in L, the enantiomer of D? Number deg mL Number g dm deg (c) What is the observed rotation...
5.41 Predict the value for the specific rotation of the following compound. Explain your answer. -OH...
5.41 Predict the value for the specific rotation of the following compound. Explain your answer. -OH НО. 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? 5.43 The specific rotation of l-alanine in water (at 25°C) is +2.8. A chemist prepared a mixture of l- alanine and its enantiomer, and...
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?
1.Calculate the specific rotation, [α], if the observed rotation is -24°, the concentration is 31 g/100...
1.Calculate the specific rotation, [α], if the observed rotation is -24°, the concentration is 31 g/100 mL, and the cell length is 5 cm. Answer in :° mL/g/dm 2. The height of three peaks; A, B, and C obtained in a gas chromatogram are 27.7 mm, 19.2 mm and 41.0 mm. The width of the peaks, at half height, are 4.9 mm, 4.7 mm and 4.6 mm, respectively. Calculate the percentage composition of C in the sample. Answer in :...
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)
question #4
Prelab Question #1: (answer the three prelab questions on this printed handout; this question is 2) related to polarimetry of Limonene): A student dissolves 0.20g of pure R-Limonene in a total of 5 mL of ethanol using a volumetric flask. The student fills a 2 dm polarimetry tube with this solution and observes a rotation of + 8.2° from that sample. Calculate the specific rotation of the student's sample of R-Limonene. 102.5 Formula to use: [a] = 1075...
A 0.120 M solution of an enantiomerically pure chiral compound D has an observed rotation of + 0.26 degree in a 1-dm sample container. The molar mass of the compound is 153.0 g/mol. What is the specific rotation of D? What is the observed rotation if this solut is mixed with an equal volume of a solution t is 0.120 M in L, the enantiomer of D? What is the observed rotation if the solution of D is diluted with...
A 0.110 M solution of an enantiomerically pure chiral compound D has an observed rotation of +0.24° in a 1-dm sample container. The molar mass of the compound is 144.0 g/mol. (a) What is the specific rotation of D? (b) What is the observed rotation if this solution is mixed with an equal volume of a solution that is 0.110 M in L, the enantiomer of D? Number deg mL Number g dm deg (c) What is the observed rotation...
5.41 Predict the value for the specific rotation of the following compound. Explain your answer. -OH НО. 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? 5.43 The specific rotation of l-alanine in water (at 25°C) is +2.8. A chemist prepared a mixture of l- alanine and its enantiomer, and...
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?
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