Homework Answers
Syn stereo is when the two group are present on the same side in the compound. The compounds which have more than one asymmetric centre and also having plane of symmetry is said to be a meso compounds.
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c. cis-1-metbylbicylol0.4.4ldecan 24. Which structure is syn? d. trans-1-methylbicyclo[0.4.41derane e. not a.-d с. e. not a.-d...
2) Which of the following incorrectly describes cis-1,2-dimethylcyclopentane? A) It is a meso compound. B) It...
2) Which of the following incorrectly describes cis-1,2-dimethylcyclopentane? A) It is a meso compound. B) It is achiral. C) It contains two asymmetric carbons. D) Its diastereomer is trans-1,2- dimethylcyclopentane. E) It has an enantiomer.
Which statement about alkanes, alkenes, and alkynes is not correct? Select one: a. Cis and trans...
Which statement about alkanes, alkenes, and alkynes is not correct? Select one: a. Cis and trans stereoisomers occur in both alkenes and alkynes. b. When they have the same number of carbon atoms, branched alkanes have lower melting and boiling points than normal alkanes. c. Alkenes and alkynes, but not alkanes, undergo addition reactions. d. The melting and boiling points increase as the number of carbon atoms in a normal alkane increases. e. Alkanes are much less reactive than alkenes...
23) For which of the following alkenes will cis- and trans- isomers not exist? CH3 H₃ C C H₂C CH3 H3CH2C-CH3 Hac нс...
23) For which of the following alkenes will cis- and trans- isomers not exist? CH3 H₃ C C H₂C CH3 H3CH2C-CH3 Hac нсінсін сня сі" A) a) only (B) only C) both a) and c) D) d) only E) both c) and d)
Chapter 11: 1. What is a prime rule in naming alkenes? a. Find the longest carbon...
Chapter 11: 1. What is a prime rule in naming alkenes? a. Find the longest carbon chain. b.Find the longest carbon chain containing the alkene. c. Find whether the alkene has a cis- or trans- configuration. d.Find how far the alkene functionality is from either end. 2. What is the IUPAC name of the following alkene? a. cis-5-methyl-2-heptene b. trans-2-ethyl-4-hexene c. trans-5-methyl-2-heptene d. trans-3-methyl-5-heptene 3. What is the hybridization, geometry, and bond angle of the carbon marked by an asterisk?...
1. Most of the class will be brominating trans-stilbene (part B) and the rest cis-stilbene (part...
1. Most of the class will be brominating trans-stilbene (part B) and the rest cis-stilbene (part A). For this assignment write a detailed procedure in your lab notebook for Part B. Upload a picture/scanned copy (5 pts). Tip: If you write the procedure down the left half of the page, you can leave space to record your measurements/observations down the right side of the page. If you end up using cis-stilbene in the experimental there will only be a few...
Which of the following structures is most stable? 2) How many stereoisomers does the molecule below...
Which of the following structures is most stable? 2) How many stereoisomers does the molecule below have? (СН), С+ снен снаси сна OH CH₃ br. a) 3 6) 4 c) 6 d) 8 e 9 3) Which of the following molecules below are chiral? 0) to A Boh A MOH HOS DBr e) 1, 2 and 3 a) Only 1 b) 1 and 3 c) 2 and 3 d) 1 and 3 What is the relationship between the following two...
cdn.inst-fs-lad-prod.inscloudgate.net a) constitutional isomers c) stereoisomers b) cis-trans isomers d) none of these 45) There are...
cdn.inst-fs-lad-prod.inscloudgate.net a) constitutional isomers c) stereoisomers b) cis-trans isomers d) none of these 45) There are 3 functional groups present on this molecule. Name them: HOCH, a) aromatic c) ketone b) alcohol d) aldehyde 46) The name for this molecule is _? a) ethanone c) ethanol CH3-C-H b) ethanal d) ethanoic acid 47) The name for this molecule is_? Н-С-ОН a) methanone c) methanol b) methanal d) methanoic acid 48) The name for this molecule is_? HC -CH, a) propanone...
A. aldehyde B. ketones C. carboxylic acids D. esters 7, How many stereoisomers of 2,4-pentanediol are...
A. aldehyde B. ketones C. carboxylic acids D. esters 7, How many stereoisomers of 2,4-pentanediol are possible? но он В. З A. 2 C. 4 D. 6 8.Which one of the following is a diastereomer of (2R, 3R)-2,3-dibromopentane? A. (2S,3S)-2,3-dibromopentane C.R-1,2-dibromopentane B. (2S,3R)-2,3-dibromopentane D. (2R,4R)-2,4-dibromopentane 9. Which one of the following groups has the highest rank as assigned by the Cahn-Ir Prelog system for stereogenic carbons? A. -CH-CH2 B. -CH20H C.-CH-0 D. -CH2SH 10. Which of the following statements are...
A. aldehyde A. two 15. W B. ketones C. carboxylic acids D. esters 7. How many stereoisomers of 24-pentanediol are p...
A. aldehyde A. two 15. W B. ketones C. carboxylic acids D. esters 7. How many stereoisomers of 24-pentanediol are possible? HO D. 6 A. 2 B.3 C. 4 8. Which one of the following is a diastereomer of 2R 3R)-2,3-dibromopentane? B. (25,3R)-2,3-dibromopentane D. (2R, 4R)-2,4-dibromopentane A. (2S,3S)-2,3-dibromopentane C. R-1,2-dibromopentane y. Which one of the following groups has the highest rank as assigned by the Cahn-Ingold Prelog system for stereogenic carbons? A. -CH=CH2 B. -CH2OH C. -CH=0 D.-CH2SH 10. Which...
3) For which of the following alkenes will cis- and trans-isomers not exist? H₂C C H₂O...
3) For which of the following alkenes will cis- and trans-isomers not exist? H₂C C H₂O CH₂ H₃C H₂C- CH₂ H₃C CH₃ H C F G H CH I a A) a only B) b only C) both a and c D) d only E) both c and d 4) Provide the proper IUPAC name for the alkene shown below. CH, CH CC H CHỊ CH(CH3 ) A) (E)-1,2-dimethyl-1-heptene B) (E)-3,5-dimethyl-2-hexene C) (Z)-1,2-dimethyl-1-heptene D) (2)-3,5-dimethyl-2-hexene E) none of the above...
2) Which of the following incorrectly describes cis-1,2-dimethylcyclopentane? A) It is a meso compound. B) It is achiral. C) It contains two asymmetric carbons. D) Its diastereomer is trans-1,2- dimethylcyclopentane. E) It has an enantiomer.
Which statement about alkanes, alkenes, and alkynes is not correct? Select one: a. Cis and trans stereoisomers occur in both alkenes and alkynes. b. When they have the same number of carbon atoms, branched alkanes have lower melting and boiling points than normal alkanes. c. Alkenes and alkynes, but not alkanes, undergo addition reactions. d. The melting and boiling points increase as the number of carbon atoms in a normal alkane increases. e. Alkanes are much less reactive than alkenes...
23) For which of the following alkenes will cis- and trans- isomers not exist? CH3 H₃ C C H₂C CH3 H3CH2C-CH3 Hac нсінсін сня сі" A) a) only (B) only C) both a) and c) D) d) only E) both c) and d)
1. Most of the class will be brominating trans-stilbene (part B) and the rest cis-stilbene (part A). For this assignment write a detailed procedure in your lab notebook for Part B. Upload a picture/scanned copy (5 pts). Tip: If you write the procedure down the left half of the page, you can leave space to record your measurements/observations down the right side of the page. If you end up using cis-stilbene in the experimental there will only be a few...
Which of the following structures is most stable? 2) How many stereoisomers does the molecule below have? (СН), С+ снен снаси сна OH CH₃ br. a) 3 6) 4 c) 6 d) 8 e 9 3) Which of the following molecules below are chiral? 0) to A Boh A MOH HOS DBr e) 1, 2 and 3 a) Only 1 b) 1 and 3 c) 2 and 3 d) 1 and 3 What is the relationship between the following two...
cdn.inst-fs-lad-prod.inscloudgate.net a) constitutional isomers c) stereoisomers b) cis-trans isomers d) none of these 45) There are 3 functional groups present on this molecule. Name them: HOCH, a) aromatic c) ketone b) alcohol d) aldehyde 46) The name for this molecule is _? a) ethanone c) ethanol CH3-C-H b) ethanal d) ethanoic acid 47) The name for this molecule is_? Н-С-ОН a) methanone c) methanol b) methanal d) methanoic acid 48) The name for this molecule is_? HC -CH, a) propanone...
A. aldehyde B. ketones C. carboxylic acids D. esters 7, How many stereoisomers of 2,4-pentanediol are possible? но он В. З A. 2 C. 4 D. 6 8.Which one of the following is a diastereomer of (2R, 3R)-2,3-dibromopentane? A. (2S,3S)-2,3-dibromopentane C.R-1,2-dibromopentane B. (2S,3R)-2,3-dibromopentane D. (2R,4R)-2,4-dibromopentane 9. Which one of the following groups has the highest rank as assigned by the Cahn-Ir Prelog system for stereogenic carbons? A. -CH-CH2 B. -CH20H C.-CH-0 D. -CH2SH 10. Which of the following statements are...
A. aldehyde A. two 15. W B. ketones C. carboxylic acids D. esters 7. How many stereoisomers of 24-pentanediol are possible? HO D. 6 A. 2 B.3 C. 4 8. Which one of the following is a diastereomer of 2R 3R)-2,3-dibromopentane? B. (25,3R)-2,3-dibromopentane D. (2R, 4R)-2,4-dibromopentane A. (2S,3S)-2,3-dibromopentane C. R-1,2-dibromopentane y. Which one of the following groups has the highest rank as assigned by the Cahn-Ingold Prelog system for stereogenic carbons? A. -CH=CH2 B. -CH2OH C. -CH=0 D.-CH2SH 10. Which...
3) For which of the following alkenes will cis- and trans-isomers not exist? H₂C C H₂O CH₂ H₃C H₂C- CH₂ H₃C CH₃ H C F G H CH I a A) a only B) b only C) both a and c D) d only E) both c and d 4) Provide the proper IUPAC name for the alkene shown below. CH, CH CC H CHỊ CH(CH3 ) A) (E)-1,2-dimethyl-1-heptene B) (E)-3,5-dimethyl-2-hexene C) (Z)-1,2-dimethyl-1-heptene D) (2)-3,5-dimethyl-2-hexene E) none of the above...
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