Answer
See answer below.
Work Step by Step
a) $AgCH_3CO_2$
Any cation would fit the criteria.
b) $CaS$
Any cation with the exception of alkali metals, and ammonium would fit the criteria.
c)$NaOH$
Only cations of alkali metals, $Ba^{2+}, Sr^{2+}$ would fit the criteria.
d) $AgCl$
Only cations of $Ag^+, Hg^{2+}, Pb^{2+}$ would fit the criteria.
e) $NH_3$
Any strong base and the conjugates of weak Brønsted acids fit the criteria.
