Which of the following are possible resonance structures of the intermediate species formed during the Electophillic...
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
Which of the following is most likely to be the first slop in the general mechanism for electrophilie substitution reactions? Arrange the following compounds in order of decreasing reactivity towards electrophilie aromatic substitution (most reactive first). V>II>I>III>IV II>V>III>I>IV IV>I>III>V>II III>II>I>IV>V IV>V>II>I>III Which one of the following substituents will not direct an incoming group to the ortho/para positions during electrophilic aromatic substitution? -CH_2CH_3 -CF_3 -OCH_3 -NHCH_3 -Br Which one of the following is not a resonance form of the cyclohexadienyl cation...
........... our major resonance structures are possible for the following cation, the o Complex of an electrophilic Map aromatic substitution. Three are given below, but are incomplete. Complete the given structures by addirrg nonbonding electrons and formal charges. Draw the remaining structure, including nonbonding electrons and formal charges Br (Scroll down)
4 points Saved QUESTION 7 Consider the following structures I-IV. Which two species represent resonance structures? :0: N -H II III IV - I and II ll and IV I and IV I and in
25. Which structures are aromatic? Make your call based on the electron distributions shown here, not on possible resonance structures. :0: = a) II, III b) III, IV c) I, III d) I, IV Chem 236 Spring 2020 26. Arrange the compounds in order of increasing reactivity toward electrophilic aromatic substitution (lowest first). a) III <I<IV<II b) I<III < II <IV c) II<I<IV <III d) III <II <I<IV
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
21) Consider the following structures I-IV. Circle the two species that represent resor sonance structures H. O: :0: H .H N. N: 22) Circle the base and the conjugate base in the following reaction но CH,COO CH COOH HO IV ш II Chapter 3 particular molecule? 23) Why do z bonds confer reactivity on a A) Because n bonds are diffficult to break in chemical reactions. B) Because z bonds make a molecule an acid. C) Because z bonds are...
s (c) NH2 Rank the molecules shown in Figure 6 from H) most acidic to least acidic (example:dcba . NH2 он Figure 6 ) Which of the following is most stable carbocation? i) methyl i) primary i) secondary iv) tertiany v) Hiv are approximately equal in stability J) Which of the following is not a characteristic of most aromatic compounds like benzene? i) they are cyclic li) they are planar ii) they are resonance stabilized iv) the aikenes of the...
Draw all the resonance structures for the stabilized carbocation intermediate formed in the following SN1 reaction. 2. CH3 CH3 OH H+ Nuc Nuc Ph Ph
Which structures are aromatic? Make your call based on the electron distributions shown here, not on possible resonance structures. Which structures are aromatic? Make your call based on the electron distributions shown here, not on possible resonance structures. :o: h I, IV II, III III, IV Ο Ι, ΙΙΙ