PROBLEM 11) Can you explain this problem and solve it correctly, please! 19. Which of the following is true of any (R)-enantiomer?A) It rotates plane-polarized light to the right.B) It rotates plane-polarized light to the left.C) It is a racemic form.D) It is the mirror image of the corresponding (S)-enantiomer.E) It has the highest priority group on the right.

Checking Each Option:— Option A: It rotates plane-polarized light to the right.- The (R) and (S)…

Answered: 19. Which of the following is true of…

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter13: Substitution

Section: Chapter Questions

Problem 48CTQ

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Consider a mixture that is 38% (+) enantiomer and the rest is the (-) enantiomer. a) In which direction would the mixture rotate plane-polarized light? Briefly explain. b) What is the %ee of the mixture? Briefly explain or draw a pie chart like those done in class. c) If the (+) enantiomer has a specific rotation of +28.5°, what is the specific rotation of the mixture? Show whork.
7. Determine if the following mixtures of the enantiomers would be optically active or inactive. HO CI HO CI a) 1:1-> b) 2:1-> c) 0:1 ->
9.a. Circle all the appropriate terms. t-Bu The two molecules drawn above are enantiomers optically active enantiomers superimposable 9.b. Circle all the appropriate terms. diastereomers not optically active H optically active Bull.... H₂CH... Br -CH3 The two molecules drawn above are Me H diastereomers not optically active superimposable Me chiral meso not superimposable H3C- H ....... chiral meso H ...III\CH3 Br not superimposable Cl achiral -t-Bu identical achiral identical 3
The substituents around the stereogenic center of this molecule is assigned. Based on these, what is the configuration of the stereogenic center? Hint: the lowest ranked substituent is already pointing back. Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a Prelab Question #5 Homework Unanswered Due Jan 30th, 8:00 AM b C R-enantiomer (clockwise) S-enantiomer (counter clockwise) This molecule does not contain a stereogenic center Unanswered 1 attempt left • 2 HO 1 JAN 4 CH3 CH3 3 Submit Biologically for example our nose can recognize some enantiomers: According to our textbook[1] the
Plane-polarized light is transmitted through a chamber that contains a single enantiomer and rotates to the right. Plane-polarized light passed through a chamber containing the other enantiomer would rotate ________ A. to the right B. not at all C. in a way that cannot be predicted D. to the left A 1:1 mixture of the enantiomers would rotate ______ A. to the right B. not at all C. in a way that cannot be predicted D. to the left
I'm a bit confused on enantiomers, diastereomers, and then a 180 flip meaning being "the same". I know enantiomers are mirror images that can't be placed one on top of the other. I also know diastereomers are non-mirror images. Then when diastereomers are flipped 180 degrees they can be considered "the same". Why couldn't that be said for enantiomers too when flipped 180 degrees? Thank you!
5. Which of the following statements is not true? A) A molecule that is superimposable on its mirror image is said to achiral. B) A molecule that is not superimposable on its mirror image is said to be chiral. C) A molecule that is superimposable on its mirror image is said to be chiral. D) A carbon atom bonded to four different groups is a stereogenic center.
What are the two compounds? A.) Diastereomers B.) Meso forms C.) Enantiomers D.) Identical
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? Modify the given carbon skeleton to draw the major product(s). If a racemic mixture of enantiomers is expected, draw both enantiomers. Note: you can select a structure and use Copy and Paste to save drawing time. C A z + : 1) OsO4 2) NaHSO,/ H₂O H3C CH3 H с N O P S LL F CI Br I i
9. Which compound reacts with both NaBH and H/Pt to produce the same product? A) 1 4 2 B) II III CHO ||| D) None of these 10. Reduction of a carbonyl to produce a stereogenic center A) occurs with the formation of both diastereomers. B) occurs with the formation of both enantiomers. (C) occurs stereospecifically yielding a single isomeric product. D) none of these. MgBr 11. Which reagent would you use to produce (S)-1-phenylethanol from phenyl methyl ketone (acetophenone)? 12. A) S-CBS reagent B) R-CBS reagent C) NaBH +S-CBS reagent 4 D) NaBH + R-CBS reagent 4 An aldehyde can be produced by the reaction of the compound shown with which reagent? A) B) || D IV OCH3 I) H₁/Pt III) LiAlH4 II) NaBH4 IV) DIBAL-H 13. LiAlH reacts with which of the following? 4 A) | H .0 CI 0 EtO. 0 B) C) III D) All of these I II III

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19. Which of the following is true of any (R)-enantiomer? A) It rotates plane-polarized light to the right. B) It rotates plane-polarized light to the left. C) It is a racemic form. D) It is the mirror image of the corresponding (S)-enantiomer. E) It has the highest priority group on the right.