Which of the following compounds have conjugated double bonds? I II III IV II and v...
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
| | | 14. Which of the following compounds is conjugated? Yoo 2attach A. I and III B. II and III S II and IV II, III and IV oops forg 15. Which of the following conjugated dienes represent two conformations? A Only I and II Only I and III C. Only II and III D. None of the choices my
Which of the following compounds is least acidic? a. I b. II c. III d. IV e. V HBr HCI NH3 ?? 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?
Which of the following compounds is most acidic? I II III IV None of these
Which of the following is the best method to prepare aspirin? I. II. III. IV. V. A) I B) II C) III D) IV E) V
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
Testbank Question 9 Which compounds are soluble in water? IV O I, II, III O I, II, IV II, III, IV I, III, IV O
5. Which one of the following is nonaromatic? III IV I II A. IV B. I C. II D. III E. None 6. Which is the correct bond order for the C-C bonds in benzene? 1.0 20 1.25 1.75 1.5 1.5 20 10 A. III B. C. IV D. II E. None
And explain why? 3. Which pair of the following compounds are constitutional isomers? III IV I and II II and III III and IV I and IV