28 eBook Print References 3 attempts left Check my work Enter your answer in the provided box. An aqueous solution containing 10 g of an optically pure substance was diluted to 500 mL with water and placed in a polarimeter tube 20 cm long. The measured rotation was -5.93°. Calculate the specific rotation of this compound. [a] =

28 eBook Print References 3 attempts left Check my work Enter your answer in the provided box. An aqueous solution containing 10 g of an optically pure substance was diluted to 500 mL with water and placed in a polarimeter tube 20 cm long. The measured rotation was -5.93°. Calculate the specific rotation of this compound. [a] =

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

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CA Sc RCITS Mas Spectrum mie Infrared Spectrum "H NMR Wavelength, microns "C Spectral Data: Structure: singlet, 174.5 ppm quartet, 50.7 ppm doublet, 35.2 ppm quartet, 18.5 pPpm 02000 Brooks Cole Publishing Company
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.
When 0.066 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 20°C (using the D line of sodium) is -0.208°Calculate the specific rotation of cholesterol. specific rotation [a] = i eTextbook and Media
An enantiopure naturally occurring sugar had a specific rotation of +136. A synthetic sample of this sugar gave a rotation of +84°, when a sample of concentration 1.37 g/100 ml was placed in a cell with a path length of 20 cm. (i) Which of the following prefixes could be used to describe this compound (on the basis of the information provided) +/-, d/l, D/L, R/S? (ii) Calculate the ee of the synthetic sample.
I have a solution of a standard reference molecule and its' enantiomer. I used 25 mg of the mixture and dissolved it in 30 mL of solvent. The pathlength of my tube is 65cm. The specific rotation of the reference material is 100. For my sample, i got+0.25 degrees. How much of my reference molecule is in the solution in % and mg?