For each of the following aqueous reactions, identify the acid, the base, the conjugate base, and the conjugate acid.

a. \(\mathrm{H}_{2} \mathrm{O}+\mathrm{H}_{2} \mathrm{CO}_{3} ightleftharpoons \mathrm{H}_{3} \mathrm{O}^{+}+\mathrm{HCO}_{3}^{-}\)

b. \(\mathrm{C}_{5} \mathrm{H}_{5} \mathrm{NH}^{+}+\mathrm{H}_{2} \mathrm{O} ightleftharpoons \mathrm{C}_{5} \mathrm{H}_{5} \mathrm{~N}+\mathrm{H}_{3} \mathrm{O}^{+}\)

c. \(\mathrm{HCO}_{3}{ }^{-}+\mathrm{C}_{5} \mathrm{H}_{5} \mathrm{NH}^{+} ightleftharpoons \mathrm{H}_{2} \mathrm{CO}_{3}+\mathrm{C}_{5} \mathrm{H}_{5} \mathrm{~N}\)