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1) Suppose that a pure compound has a specific rotation of +49°. In the laboratory a...
the R-(+) enantiomer of a certain compound has a specific rotation of +52. A mixture of...
the R-(+) enantiomer of a certain compound has a specific rotation of +52. A mixture of this compound with its enantiomer has a has an observed rotation of -26. what is the %ee of this sample and which enantiomer is in excess? what is the ration of R:S in this mixture?
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...
7 (7 pts) The specific rotation, (a), of an optically pure natural product 15 compound we...
7 (7 pts) The specific rotation, (a), of an optically pure natural product 15 compound we made in the lab was prepared by diluting 12.55 grams of it in a 30.0 cm polarimeter tube. pure natural product is -65.0°. A sample of the same uuting 12.55 grams of it into 40.0 ml of ethanol and placed A) Our compound was found to have an "ee" of 80% - What was the specific totam % - What was the specific rotation...
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 0.120 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...
D Apure stereoisomer of a compound has a specific rotation Of - 39.00. A 100 ML solution of o.187 g ot an ena...
D Apure stereoisomer of a compound has a specific rotation Of - 39.00. A 100 ML solution of o.187 g ot an enantiomeric mixture of the compound has an Obschied rotation of -6.520 When placed in a polanmeter tube 10cm long. what is the percent of each enantiomer in the solution? Show all work." ort Answer: Answer each question to the best of your ability. Be sure to show your thought udget your time wisely - not all questions are...
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...
An aqueous solution containing 10 g of an optically pure compound was diluted to 500 mL...
An aqueous solution containing 10 g of an optically pure compound was diluted to 500 mL with water and was found to have a specific rotation of −117°. If this solution were mixed with 500 mL of a solution containing 3 g of a racemic mixture of the compound, what would the specific rotation of the resulting mixture of the compound? What would be its optical purity?
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...
7 (7 pts) The specific rotation, (a), of an optically pure natural product 15 compound we made in the lab was prepared by diluting 12.55 grams of it in a 30.0 cm polarimeter tube. pure natural product is -65.0°. A sample of the same uuting 12.55 grams of it into 40.0 ml of ethanol and placed A) Our compound was found to have an "ee" of 80% - What was the specific totam % - What was the specific rotation...
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...
D Apure stereoisomer of a compound has a specific rotation Of - 39.00. A 100 ML solution of o.187 g ot an enantiomeric mixture of the compound has an Obschied rotation of -6.520 When placed in a polanmeter tube 10cm long. what is the percent of each enantiomer in the solution? Show all work." ort Answer: Answer each question to the best of your ability. Be sure to show your thought udget your time wisely - not all questions are...
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...
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