1. Which molecules below are aromatic? Select one: I and 11 I, II and III II...
Which of these molecules are structural isomers of n-octane (CgH18)? III II IV Select one: a. I, II, IlII, IV, and V b. III and IV c. II and V d. I, IIl, and IV e. only II has 8 carbon atoms in a chain
please exlain why!
Which of these is an aromatic molecule? 0=ả: < II III IV I O A. 11 OB.1 OC.IN O DV O E. III
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?
Question 26 (2 points) Saved Which of the following ions is aromatic? D:0 = I II IV OA) OB) 11 OC) III OD) IV Question 27 (2 points) Saved Which of the following ions is aromatic? 20: A) Only II and III OB) Only III and IV OC) Only I and II OD) Only II and IV
Consider molecules ? - IV below. F OH F OH F... ...OH F ОН I/ III IV What is the relationship between molecules I & II? [Select) What is the relationship between molecules I & III? (Select] What is the relationship between molecules II & IV? (Select] What is the relationship between molecules III & IV? (Select] Prevind
19. Which of the following molecules are achiral? A) II, III B) I, II C) I, IV D) III, IV 20. How many stereogenic centers are present in ephedrine, a bronchodilator and decongestant? ephedrine A) 0 B) 1 C) 2 D) 3 21. Rank the following groups in order of decreasing priority according to the Cahn-Ingold- Prelog system. -NH2 -NHCH3 -CH2NH2 CH2NHCH3 п V . A) B) I>II> III > IV II >I>IV > III II C II >I> III...
Which of the following correctly matches the molecules to the names of the functional group? I. CH3OCH3 Ether II. CH3CONH2 Amine III. CHESH Thiol IV. CH3CHO Alcohol Select one: 0 a. I and II b. III and IV c. II and III d. I and III Which of the following correctly matches the molecules to the names of the functional group? I. CH3NH2 Amide II. CHESCH; Sulfide III. CH3CONH2 Amine IV. CH3CO,CH3 Ester Select one: a. III and IV b....
) Which of the following is aromatic? IV. V. A) 1 B) II C) III D) IV E) V
Of the alkenes below (I-IV), which one is the most stable? I II III IV IV
Question 47 (2 points) Which one of the following compounds is aromatic? S - II IV a) III Ob) Oc) II O d) IV Question 48 (2 points) Predict the product(s) for the following reaction: NaNH2, NH3 NH2 -NH₂ que "NH2 a) I, II and III b) I and II c) III and I d) II and III