Chapter 16.12, Problem 16.21WE

Identify the Lewis acid and Lewis base in each of the following reactions.

$\begin{array}{l}{\text{(a) C}}_{\text{2}}{\text{H}}_{\text{5}}{\text{OC}}_{\text{2}}{\text{H}}_{\text{5}}+{\text{AlCl}}_{\text{3}}\rightleftarrows {{\text{(C}}_{\text{2}}}_{{\text{H}}_{\text{5}}}{\text{OAlCl}}_3\\ {\text{(b) Hg}}^{\text{2+}}\text{(}aq\text{)}+4{\text{CN}}^{-}(aq)\rightleftarrows {\text{Hg(CN)}}_4^{2-}(aq)\end{array}$