The specific rotation, [a]D, for (+)-alanine is +8.5. What is the observed rotation for a solution of 3.1 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 1.7 g of a compound in 10 mL of water is +5.8 degrees. If the pathlength is 10 cm, what is the specific rotation of the compound?

The specific rotation, [a]D, for (+)-alanine is +8.5. What is the observed rotation for a solution of 3.1 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 1.7 g of a compound in 10 mL of water is +5.8 degrees. If the pathlength is 10 cm, what is the specific rotation of the compound?

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter3: Stereoisomerism And Chirality

Section3.7: Optical Activity—how Chirality Is Detected In The Laboratory

Problem 3.9P

See similar textbooks

Similar questions

app:10Tack.co Type here to se OM C O Quin 23 of 30 A solution of a chiral compound was prepared by dissolving 15.67 g in 16.00 mL of solvent. The solution was placed in a tube that is 1.00 dm long. What is the specific rotation of light if the observed rotation was determined experimentally to be +62.41"? ✓ O 1 4 7 2 5 3 6 9 0 DAộ c * ▪ ✪ с x 100 1508227
An aqueous solution containing 6.67 g of an optically-pure compound was diluted to 7.00 x 10 mL with water and placed in a 15.0 cm long polarimeter tube. The measured rotation was -2.61° at 25° C. Calculate the specific rotation of the compound. = (α=
The specific rotation, [a]p, for (-)-malic acid is -27. What is the observed rotation for a solution of 1.2 g of (-)-malic acid in 10 mL of water in a sample tube having a pathlength of 10 cm? | degrees. The observed rotation of a solution of 1.2 g of a compound in 10 mL of water is +0.75 degrees. If the pathlength is 10 cm, what is the specific rotation of the compound? 9 more group attempts remaining Submit Answer Retry Entire Group
View Policies Current Attempt in Progress When 0.234 g of monosodium glutamate (MSG) is dissolved in 10.0 mL of water and placed in a sample cell 10.0 cm in length, the observed rotation at 20°(using the D line of sodium) is +0.599°. Calculate the specific rotation of MSG. specific rotation = [a] = i eTexthook and Media
CH, CH, Q3: 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 +0.78. Calculate the % ee of the mixture.
1. When 0.247 g of monosodium glutamate (MSG) is dissolved in 10.0 mL of water and placed in a sample cell 10.0 cm in length, the observed rotation at 20°(using the D line of sodium) is +0.632°. Calculate the specific rotation of MSG. 2. When 0.095 g of cholesterol is dissolved in 1.00 mL of ether and placed in a sample cell 10.0 cm in length, the observed rotation at 20°C (using the D line of sodium) is -0.299°.Calculate the specific rotation of cholesterol.3. The specific rotation of L-dopa in water (at 15°C) is -39.5. A chemist prepared a mixture of L-dopa and its enantiomer, and this mixture had a specific rotation of -34. Calculate the % ee of this mixture. 4. The specific rotation of vitamin B7 in water (at 22°C) is +92. A chemist prepared a mixture of vitamin B7 and its enantiomer, and this mixture had a specific rotation of +18. Calculate the % ee of this mixture.
The specific rotation, [a]p, for (-)-malic acid is -27. What is the observed rotation for a solution of 0.75 g of (-)-malic acid in 10 mL of water in a sample tube having a pathlength of 10 cm? degrees. The observed rotation of a solution of 1.4 g of a compound in 10 mL of water is +1.3 degrees. If the pathlength is 10 cm, what is the specific rotation of the compound? 9 more group attempts remaining Submit Answer Retry Entire Group
How can we decide whether an observed rotation of a solution of an optically active compound is +170° and not actually -190°?
< Question 22 of 67 A solution of a chiral compound was prepared by dissolving 15.67 g in 16.00 mL of solvent. The solution was placed in a tube that is 1.00 dm long. What is the specific rotation of light if the observed rotation was determined experimentally to be +62.41°? 1 4 7 +/- 2 сл 8 . 6 S O Submit C x 100
2. The observed rotation of a compound, X (14.0g dissolved in water to make 100ml. of solution) in a polarimeter tube of length 30cm is +10.5°. What is the specific rotation of X?
The specific rotation, [a]p, for (-)-2-butanol is +14. What is the observed rotation for a solution of 3.3 g of (-)-2-butanol in 10 mL of water in a sample tube having a pathlength of 10 cm? degrees . The observed rotation of a solution of 0.75 g of a compound in 10 mL of water is -6.9 degrees. If the pathlength is 10 cm, what is the specific rotation of the compound?
The specific rotation of vitamin C ( using the D line of sodium, at 20°C) is +24. Predict what the observed rotation would be for a solution containing 0.100 g of vitamin C dissolved in 10.0 ml of ethanol and placed in a sample cell with a length of 1dm.