The specific rotation of optically pure (R,R)-tartaric acid is +12.4. If a mixture of (R,R)- and (S,S)-tartaric acid was found to have a specific rotation of -9.3: A. Calculate the ee% of the mixture. B. What percent of the mixture is comprised of (R,R)-tartaric acid? What percent of the mixture is comprised of (S,S)-tartaric acid? Show your work!

The specific rotation of optically pure (R,R)-tartaric acid is +12.4. If a mixture of (R,R)- and (S,S)-tartaric acid was found to have a specific rotation of -9.3: A. Calculate the ee% of the mixture. B. What percent of the mixture is comprised of (R,R)-tartaric acid? What percent of the mixture is comprised of (S,S)-tartaric acid? Show your work!

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Referring to (2R,3S)-butan-1,2.3.4-tetraol.. a. Draw its 2D structure, Newman projection formula (eclipsed and staggered (both gauche & anti) and and Fischer projection formula. b. Using its Fischer projection, how many stereoisomers are possible? Draw the corresponding enantiomer and diastereomers (label as I, II, etc). Which pairs are enantiomers? diastereomers? Erythro? Threo? Meso compound/s? c. Using the projection formula, draw an energy diagram for all rotamers starting from the high energy conformer.
A)Circle all of the stereo centers in MDMA. B) assign the absolute stereochemistry (R or S) for each stereo center
6. What is an advantage of using pyridinium tribromide instead of bromine? (1 point) 7. Draw the equilibrium equation for the dissociation of pyridinium tribromide to give molecular bromine. Do not copy and paste from someone else's work, must be original. (2 points) 8. With regards to stereochemistry, what does the term "meso" mean? (1 point) 9. How many chiral centers does the product meso-stilbene dibromide have? (1 point) Safe Working Conditions (2 points) To receive full credit, compliance to all safety rules must be demonstrated throughout the entire lab period. In addition, the following safety-related problem must be answered correctly. What are the hazards for pyridinium tribromide? How should spills be cleaned up?
None
9. Which one of the following groups has the Lowest rank as assigned by the Cahn-Ingold-Prelog system for stereogenic carbons? A. -CH₂OH B. -CH=O C. -CH=CH₂ D. -CH₂SH
please help with these isomere types and indicate what is the cause of that relationship! (barrier to free rotation or asymmetric center)!PLEASE HELP WITH ALL! Thanks!!!
1. How can we separate pure s- carvone from a sample of s-carvone contaminated with limonene? Explain. 2.Circle the circle center and draw the R and S configuration of the following a. Menthol b.Geraniol c. a-pinene
6. Calculate the % ee and the specific rotation of a mixture containing 12.0 g of (+)-2-Butanol and 10.0 g (-)-2-Butanol. The specific rotation of (+)-2-Butanol is + 13.5º.
Be sure to answer all parts. Rank the following groups in order of decreasing priority: A. CCH B. CH(CH3)2 C.-CH2CH3 D.-CH-CH, Show work. don't use Ai for answering this Highest Priority Lowest Priority
Q8. Draw the two possible chair-like conformations of compound 1. 2 Using the Cahn Ingold Prelog priority rules, assign the absolute stereochemistry to each stereogenic centre contained in compound 1. NH2 1
Draw the structure of the final product(s) of this series of reactions. 1. 1 equivalent of NaNH2 2. CH3CH,CH,CH,Br 3. H2, Lindlar's catalyst 4. Br2 • Use the wedge/hash bond tools to indicate stereochemistry where it exists. • Include H atoms at chiral centers only. • If a group is achiral, do not use wedged or hashed bonds on it. • Draw organic species only. • Do not include lone pairs in your answer. They will not be considered in the grading. • If the reaction produces a racemic mixture, draw both stereoisomers. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. Separate multiple products using the + sign from the drop-down menu. C opy aste ChemDoodle®
Consider the following carbohydrate, D-Allose: H H H H H Select one: O a. O b. 0 с. CH₂OH Select the correct depiction of the enantiomer L-Allose from the options below: O d. НО НО НО НО НО НО -OH НО -OH Н H -ОН H H H H H H Н HO H Н. OH -Н -Н -Н -Н CH₂OH H H H CH₂OH -ОН CH₂OH -OH -OH -ОН H CH₂OH 0 -ОН -ОН -OH -ОН