===Examples===A common example of an amphiprotic substance is the hydrogen carbonate ion, which can act as a base::HCO3− + H3O+ → H2CO3 + H2Oor as an acid::HCO3− + OH− → CO32− + H2OThus, it can effectively accept or donate a proton.
Vse omenjene molekule vsebujejo vodikov atom in lahko delujejo kot kisline ali baze, zato so amfoterne.