MCAT Organic Chemistry Review 2018-2019

I. It has partial double-bond character.
II. It is sp^3 -hybridized.
III. It has some sp^2 character.

(A)  I  only

(B)  II only

(C)  I  and II  only

(D)  I  and III only

8 . Which   of  the primary methods of  amino   acid    synthesis   results in  an  optically   active

solution?

(A)  The    Strecker    synthesis   only

(B)  The    Gabriel synthesis   only

(C)  Both   the Strecker    and Gabriel syntheses

(D)  Neither    the Strecker    nor the Gabriel syntheses

9 . During  the Gabriel synthesis,  phthalimide serves  as  the:

(A)  nucleophile.

(B)  base.

(C)  leaving    group.

(D)  electrophile.

10 .    Each    of  the following   reaction    types   occurs  during  the Gabriel synthesis   EXCEPT:

(A)  decarboxylation.

(B)  nucleophilic   substitution.

(C)  dehydration.

(D)  hydrolysis.

11 .    At  physiological   pH, which   two forms   of  phosphoric  acid    have    the highest concentrations?