Question
Identify the acids and bases in the following equilibrium reactions:
Solution

HCl and H3O+ ions are acids as both have the tendency to donate a proton. H2O and Cl–ions are bases as both have the tendency to accept a proton.

HNO3 and H3O+ ions are acids as both have the tendency to donate a proton.
H2O and HO3– ions are bases as both have the tendency to accept a proton.

