Q: (c) How many stereoisomers are present in tartaric acid? Also draw their structures.
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A: The given structure appears as follows: The chemical formula of the given above structure is C8H18.
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A: Please see the attachment.
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Q: sample
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- The [α] of pure quinine, an antimalarial drug, is −165. a.Calculate the ee of a solution with the following [α] values: −50, −83, and −120. b. For each ee, calculate the percent of each enantiomer present. c.What is [α] for the enantiomer of quinine? d. If a solution contains 80% quinine and 20% of its enantiomer, what is the ee of the solution? e. What is [α] for the solution described in part (d)?D-Xylose in aqueous solution exists in the pyranose form as a mixture of α and β anomers. Furanose and acyclic forms are present in negligible amounts and can be ignored. A sample of pure α-D-xylopyranose is dissolved in pure neutral water. The optical rotation is then measured immediately using a polarimeter. The specific rotation [??]?? is +93.6°. The optical rotation is then observed to decrease with the passage of time, and the solution is allowed to reach equilibrium. Eventually the specific rotation stabilises at [??]?? = +18.8°. The anomeric ratio at equilibrium a : β is 37 : 63. A sample of pure β-D-xylopyranose is not available. Using this information, predict the specific rotation of pure β-D-xylopyranose. Show how the a and β anomers equilibrate using a mechanism, assuming the presence of a trace amount of base as catalyst.The [α] of pure quinine, an antimalarial drug, is −165.Calculate the ee of a solution with the following [α] values: −50, −83,and −120.For each ee, calculate the percent of each enantiomer present.What is [α] for the enantiomer of quinine?If a solution contains 80% quinine and 20% of its enantiomer, what isthe ee of the solution?What is [α] for the solution described in part (d)?
- where are the chiral centers of the compound redraw the structure with all chiral centers in s configuration how many diastereomers can this compound have ? (no need to draw) thanks will upvoteConsider Newman projections (A–D) for four-carbon carbohydrates. How is each pair of compounds related: (a) A and B; (b) A and C; (c) A and D; (d) C and D? Choose from identical molecules, enantiomers, or diastereomers.If a sample has 75 % ee of the stereoisomer R, what is the % of S in the sample? A. 12.5 B. I do not know C. 50 D. 75 E. 25
- Determine the number of possible stereoisomers for the compound below.Draw all possible stereoisomers for HC=OCHClCHClCH2Br. Label the compounds as Compound I, II, etc.. Determine the relation of each of these compounds to another (pair relations as enantiomers, diastereomer, mesocompound or no relations).Answer the following A)No.of chiral centers? B)No of stereoisomers? C)what is the absolute configuration of C2?