MCAT Organic Chemistry Review 2018-2019

8 . Which   of  the following   compounds   would   be  most    reactive    toward  a   nucleophile?

(A)  Pentanal

(B)  3-pentanone

(C)  Pentane

(D)  2-nonanone

9 . α-hydrogens of  a   ketone  are acidic  due to:

I. resonance stabilization.
II. the electron-withdrawing properties of the alkyl groups.
III. the electronegative carbonyl oxygen.

(A)  I  only

(B)  I  and III only

(C)  II and III only

(D)  I, II, and III

10 .    Which   of  the following   is  considered  a   tautomer    of  the imine   functional  group?

(A)  Cyanohydrin

(B)  Hydrazone

(C)  Enamine

(D)  Semicarbazone

11 .    When    succinaldehyde  is  treated with    lithium diisopropylamide    (LDA),  it:

I. becomes more nucleophilic.
II. becomes less nucleophilic.
III. generates a carbanion.