- Saltsyre (HCl):I vand donerer HCl en proton for at danne H3O+ (hydroniumion) og Cl- (chloridion). HCl + H2O → H3O+ + Cl-
- Svovlsyre (H2SO4):I vand donerer H2SO4 to protoner for at danne to H3O+ ioner og SO42- (sulfation). H2SO4 + 2H2O → 2H3O+ + SO42-
- Eddikesyre (CH3COOH):I vand donerer CH3COOH en proton for at danne H3O+ og CH3COO- (acetation). CH3COOH + H2O → H3O+ + CH3COO-