Homework Answers
Answer 14.
option C is correct
explanation:
you need to first learn how to define weather a alkene is conjugated or not ,so for this you should know ,if a diene with two double bonds are separated by one single bond i.e. called conjugated dienes.In above questions, || and IV are as so, so they are conjugated dienes.
Answer 15.
C option is correct.
because, only II and III alkenes are representing two conformation.
Please upvote
Add Answer to:
| | | 14. Which of the following compounds is conjugated? Yoo 2attach A. I and...
Which of the following conjugated dienes represent two conformations? Onlu I and II Only I and...
Which of the following conjugated dienes represent two conformations? Onlu I and II Only I and III Only II and III None of the choices
22. Which of the following compounds is(are) conjugated diene(s)? II III IV a. ll only b....
22. Which of the following compounds is(are) conjugated diene(s)? II III IV a. ll only b. I and III c. I and IV d. II, Ill, and IV 23. Vitamin D, has the following structure. Classify the circled pi-bond in vitamin D, as conjugated, cumulated or isolated a. Conjugated b. Cumulated c. Isolate 24. What is the IUPAC name for the following compound? a. (22,42,6E)-3,4,7-trimethylocta-2,4,6-triene b. (2,4,6E)-2,5,6-trimethylocta-2,4,6-triene c. (25,4Z)-3,4,7-trimethylocta-2,4,6-triene d. (48,6E)-2,5,6-trimethylocta-2,4,6-triene
Which of the following compounds have conjugated double bonds? I II III IV II and v...
Which of the following compounds have conjugated double bonds? I II III IV II and v II, IV, and v I and III I, III, and IV all of them
Which of the following compounds is consistent with the^13C NMR spectrum shown below? A) I B)...
Which of the following compounds is consistent with the^13C NMR spectrum shown below? A) I B) II C) III D) none of these Which of the following compounds have the same degree of unsaturation? C_5H_5Br_2NO C_6H_5Br C_gH_10BrIO C_9H_11 NO A) I & II B) I & III C) III & IV D) II & III E) none of these
Which of the following compounds would you expect to be antiaromatic? (i) cyclooctatetraene (ii) 1,3-cyclooctadiene (iii) cyclooctatetraenyl dianion (iv)
Which of the following compounds would you expect to be antiaromatic? (i) cyclooctatetraene (ii) 1,3-cyclooctadiene (iii) cyclooctatetraenyl dianion (iv) 1-ethenylcyclooctatetraene (v) 1,3,5,7-octatetraene Select one: a. i only b. i, ii, iv and v only c. iii only d. i and iv only e. all the above From my working I found i, ii, iv, and v to be non aromatic and iii to be aromatic. Is non aromatic the same as antiaromatic?
Rank the following compounds from lowest to highest heat of hydrogenation: I, II, III, IV IV,...
Rank the following compounds from lowest to highest heat of hydrogenation: I, II, III, IV IV, III, II, I II, III, IV, I I, IV, III, II none of these choices
A. Double bonds that are connected by a single bond are said to be conjugated. For...
A. Double bonds that are connected by a single bond are said to be conjugated. For each molecule below, indicate how many conjugated double bonds are present in each molecule. HO OH bro HO B. One feature that distinguishes conjugated dienes from isolated dienes is that the C-C bond joining the two double bonds is unusually short. For each of the molecules in Part A, indicate which C-C single bond(s) might be shorter than expected. C. Some reactions of conjugated...
14. Which of the following chiral compounds is(are) S enantiomer(s)? I. OH Hac H3C OH H3C...
14. Which of the following chiral compounds is(are) S enantiomer(s)? I. OH Hac H3C OH H3C ?CI H3C HC HCH2C HCH2C A) I B) II C) III D) I and II E) I and III "ci
19. What would be the major product(s) of the following reaction? Br EtOH 20 °C OEt IV C) I and I...
19. What would be the major product(s) of the following reaction? Br EtOH 20 °C OEt IV C) I and III A) I and II D) IV B) II and III E) None of these choices. 20. Give a detailed reaction mechanism for the reaction expected to occur when 2-bromo- methylpentane is heated with methanol. Draw clear structural formulas of all relevant species and use curved arrows to represent electron flow. Also indicate which step is likely to be rate-...
23. Which of the following correctly ranks the compounds below by ascending boiling point? I. CH3COCH...
23. Which of the following correctly ranks the compounds below by ascending boiling point? I. CH3COCH II. KC III. Kr IV. CH:CH(OH)CH A. I<II<IV<III . . B. III <IV<I<II I . C. II<IV <I<III D. III <I<IV<II
Which of the following conjugated dienes represent two conformations? Onlu I and II Only I and III Only II and III None of the choices
22. Which of the following compounds is(are) conjugated diene(s)? II III IV a. ll only b. I and III c. I and IV d. II, Ill, and IV 23. Vitamin D, has the following structure. Classify the circled pi-bond in vitamin D, as conjugated, cumulated or isolated a. Conjugated b. Cumulated c. Isolate 24. What is the IUPAC name for the following compound? a. (22,42,6E)-3,4,7-trimethylocta-2,4,6-triene b. (2,4,6E)-2,5,6-trimethylocta-2,4,6-triene c. (25,4Z)-3,4,7-trimethylocta-2,4,6-triene d. (48,6E)-2,5,6-trimethylocta-2,4,6-triene
Which of the following compounds have conjugated double bonds? I II III IV II and v II, IV, and v I and III I, III, and IV all of them
Which of the following compounds is consistent with the^13C NMR spectrum shown below? A) I B) II C) III D) none of these Which of the following compounds have the same degree of unsaturation? C_5H_5Br_2NO C_6H_5Br C_gH_10BrIO C_9H_11 NO A) I & II B) I & III C) III & IV D) II & III E) none of these
Rank the following compounds from lowest to highest heat of hydrogenation: I, II, III, IV IV, III, II, I II, III, IV, I I, IV, III, II none of these choices
A. Double bonds that are connected by a single bond are said to be conjugated. For each molecule below, indicate how many conjugated double bonds are present in each molecule. HO OH bro HO B. One feature that distinguishes conjugated dienes from isolated dienes is that the C-C bond joining the two double bonds is unusually short. For each of the molecules in Part A, indicate which C-C single bond(s) might be shorter than expected. C. Some reactions of conjugated...
14. Which of the following chiral compounds is(are) S enantiomer(s)? I. OH Hac H3C OH H3C ?CI H3C HC HCH2C HCH2C A) I B) II C) III D) I and II E) I and III "ci
19. What would be the major product(s) of the following reaction? Br EtOH 20 °C OEt IV C) I and III A) I and II D) IV B) II and III E) None of these choices. 20. Give a detailed reaction mechanism for the reaction expected to occur when 2-bromo- methylpentane is heated with methanol. Draw clear structural formulas of all relevant species and use curved arrows to represent electron flow. Also indicate which step is likely to be rate-...
23. Which of the following correctly ranks the compounds below by ascending boiling point? I. CH3COCH II. KC III. Kr IV. CH:CH(OH)CH A. I<II<IV<III . . B. III <IV<I<II I . C. II<IV <I<III D. III <I<IV<II
Most questions answered within 3 hours.
-
Please answer the four questions below.
1. If you were going to test a method that...
asked 5 minutes ago -
Provide two or three examples of support he uses to reinforce
his arguments?
The Alienation of...
asked 13 minutes ago -
QUESTION 1
Why do we see terms with multiple names in the database
community?
Consistency is...
asked 8 minutes ago -
In a titration experiment, 11.5 mL of 0.400 M H2SO4 neutralized
48.0 mL of NaOH. What...
asked 12 minutes ago -
A shot-putter throws the shot with a horizontal velocity of 10
m/s and a
vertical velocity...
asked 28 minutes ago -
Mildred sells industrial-sized refrigeration units. Her
prospective buyer's face looks tense, and his forehead is wrinkled....
asked 29 minutes ago -
Clark Heter is an industrial engineer at Lyons Products. He
would like to determine whether there...
asked 1 hour ago -
3. Use a text editor to create a comma-delimited file of user
IDs and passwords. Revise...
asked 1 hour ago -
Jensen and Associates has a projected balance
sheet that includes the following accounts. What is the...
asked 45 minutes ago -
implement a doubly-linked list in C. Each node in the linked list should contain a string,...
asked 1 hour ago -
What are some best practices and things to avoid when developing
a PowerPoint presentation or file
asked 1 hour ago -
Consider the ways that the government can get involved in
economic issues. What role do you...
asked 46 minutes ago