# How do acids and bases affect the hydrogen ion concentration of a solution?

Apr 4, 2018

Well, acids tend to have a lot of ${H}^{+}$ ions.
According to the Arrhenius acid-base theory, acids dissociate into ${H}^{+}$ ions in aqueous solutions, while bases dissociate into $O {H}^{-}$ ions in aqueous solutions. So from here, we can say that acids contain a lot of ${H}^{+}$ ions, while bases contain less ${H}^{+}$ ions and more $O {H}^{-}$ ions.