Which carbocation would be least stable? ad 100 fion Du IV V I II III Select...
Which alkene is least stable? III II I al A1P e,v b II с I
Of the alkenes below (I-IV), which one is the most stable? I II III IV IV
Which Allene is least stable?
Which alkene is least stable? A I B) II C) III D None of these
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 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
5) Which of the following is the most stable carbocation (circle one)? CН C—CH, IV I. CH—С-СH СHз CHCH-8 П. CH3 -СH -CH3 V. CHз—C Ш. 6) Which of the following is the most stable diene (circlde one)? IV I. V. П. Ш.
Which of the following carbocations is the least stable? Do uhradar Select one: O a. carbocation b © b. carbocation d O c. carbocationc d. None of the above e. carbocation a YHLE
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 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 radicals in order of decreasing stanility (most
to least stable)
II IV IV > I > II > III III > II >> IV III >> II > IV Il > III > I > IV III > IV > Il > 1