Base: Proton Acceptor

Just as an acid tends to lose hydrogen ions, a base accepts hydrogen ions. In a solution containing a base, the base accepts protons as follows: $$B + H_2O \rightarrow BH^+ + OH^-$$ This is often abbreviated $$B + H^+ \rightarrow BH^+$$ The presence of excess $OH^-$ in solution decreases the pOH and increases the pH.