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12. Which of the following is/are correct resonance structure(s) for compound A? A) III and IV...
Which of the following is (are) correct resonance structure (s) for the intermediate formed in the nitration of bromobenzene? H H Br Br Br - Br Br H H NO2 NO2 H NO2 NOZ III NO2 II IV Select one: Lill and IV Lil and in II, III and IV II, IV and v Lill and v
Question 17 The correct structure for ethyl 3-methylbutanoate is: lyhyby III IV V A. III B. C. V DIV E. II Question 18 Considering only the highlighted hydrogens, list the following compounds in order of decreasing acidity: && und III IV A. V, IV, III, II, 1 B. III, I, II, V, IV C. I, II, III, IV, V D. IV, V, II, I, III E. III, V, IV, 1, 11
Which, if any of the following structures are NOT reasonable resonance structures of "T"? III IV C III and V III and IV D II and IV E all are reasonable II and V Select one: OB O O O Clear my choice
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
Question 15 Which of the following would undergo epimerization in base? You ☺ II III IV A. I B. II C. III D. IV E. Both III and IV Question 16 What is the correct structure for 3-phenylpropanal? MY II H IV V ООООО CA. II B. C. IV D.V E. III
1. Which of the following is a correct resonance structure for compound shown in the right? NH 2. What is the relationship between the following compounds? A. constitutional isomers B. resonance structures C. conformers D. identical compounds
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
please explaine 2) Identify the chiral compound(s) below. IV A) only II B) III and IV C) II and III D) I, II, and IV
30) Which of the following is the most stable diene? L. IV. A)I B) C)III D)IV E) V 31) Which of the following is an aromatic hydrocarbon? IV -CH A)I B C)ID)IVE) V 32) Which of the following conjugated dienes will not react with a dieneophile in a Diels-Alder reaction? Π. IV A) I B)11 C)111 D) IVE) I and III 33) The conjugate acid of the compound shown below is B) aromatic D) antiaromatic. E) none of the above....
12. What is the correct structure for phenylbenzoate? What is the order of decreasing reactivity towards nucleophilic acyl substitution for the carboxylie acid derivatives? (most reactive first) a. I, II, III, IV b. I, III, IV, II c. II, IV, III, 1 d. II, I, III, IV a. I, III, II, IV b. II. III. I. IV c. III, III, IV d. IV. I, III, II 15. The intermediate structures for the mechanism for the reaction of propanoyl chloride with...