Answer
See the answer below.
Work Step by Step
a) Autoionization: $2\ NH_3\leftrightarrow NH_4^++NH_2^-$
b) By analogy with water, the strongest acid is $NH_4^+$, and the strongest base is $NH_2^-$.
c) Since HCl is a stronger acid than NH4+, it should be mostly ionized and the solution should be a strong electrical conductor.
d) Reaction:
$O^{2-}+NH_3\leftrightarrow NH_2^-+OH^-$
Since O2- is a stronger base than NH2-, the reaction should favor the products at equilibrium.
