Textbook Problem

. In each of the following chemical equations, identify the conjugate acid-base pairs.

a. ${\text{CH}}_{\text{3}}{\text{NH}}_{\text{2}}+{\text{H}}_{\text{2}}\text{O}\rightleftharpoons {\text{CH}}_{\text{3}}{\text{NH}}_{\text{3}}{}^{\text{+}}+{\text{OH}}^{\text{-}}$

b. ${\text{CH}}_{\text{3}}\text{COOH}+{\text{NH}}_{\text{3}}\rightleftharpoons {\text{CH}}_{\text{3}}{\text{COO}}^{\text{-}}+{\text{NH}}_{\text{4}}{}^{+}$

c. $\text{HF}+{\text{NH}}_{\text{3}}=\text{F}+{\text{NH}}_{\text{4}}{}^{+}$