A) If the observed rotation for the product mixture obtained from running the reaction in toluene is
18.7, what is the specific rotation of the S enantiomer?
B) Based on your answer in part (a), predict what the observed rotation would be for a solution
containing 0.250 g of this S-enantiomer dissolved in 10.0 mL of ethanol and placed in a sample
cell with a length of 10.0 cm.
A) If the observed rotation for the product mixture obtained from running the reaction in toluene...
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?
PRINTtR VERSION イBACK NEXT Practice Problem 05.43 Your answer is incorrect. Try again. 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 3.50 g of the mixture was dissolved in 10.0 ml of water. This solution was then placed in a sample cell with a pathlength of 10.0 cm and the observed rotation was-0.38. Calculate the % ee of the mixture. the tolerance is +/-2% SHOW HINT...
5.40 You are given a solution containing a pair of enantiomers (A and B). Careful measurements show that the solution contains 98% A and 2% B. What is the ee of this solution? 5.41 HO TOH Predict the value for the specific rotation of the following compound. Explain your answer. -OH HO. 5.42 The specific rotation of (S)-2-butanol is +13.5. If 1.00 g of its enantiomer is dissolved in 10.01 of ethanol and placed in a sample cell with a...
5.56 The specific rotation of vitamin C (using the D line of sodium, at 20°C) is +24 g the D line of sodium, at 20°C) is +24. Predict what the on would be for a solution containing 0.100 g of vitamin C dissolved in of ethanol and placed in a sample cell with a length of 1.00 dm.
please solve and probide step by step 15. Calculate the observed rotation expected in the following situation: a standard 2.00-dm cell is used and ten grams of a 9:1 mixture of enantiomers is dissolved in 100 mL of solvent. The major enantiomer has a specific rotation of +200°.(4 pts)
(+)-camphor has a specific rotation of +44. if you have a mixture of 34% (+)-camphor and 66% (-)-camphor, what will be the observed rotation of this mixture? Assume 1 g dissolved in 1 mL; the sample cell is 1 dm long
The specific rotation, (a)p, for (+)-alanine is +8.5. What is the observed rotation for a solution of 1.7 g of (+)-alanine in 10 mL of water in a sample tube having a pathlength of 10 cm? degrees The observed rotation of a solution of 1.3 g of a compound in 10 mL of water is +8.2 degrees. If the pathlength is 10 cm, what is the specific rotation of the compound? The specific rotation, (a)p, for(-)-pseudoephedrine is - 52. What...
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...
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...