Question

What does Arrhenius acids have in common?

Answer 1

1. According to Arrhenius's concept "All substances releases $H^{+}ions$ when dissolved in water are called acids on the other hand those releases $O{H}^{-}ions$ are called bases".
   $$\begin{gathered} HCL\mathit{}\stackrel{}{\mathit{\rightleftharpoons }}{H}^{+}\left(aq\right)+C{l}^{-}\left(aq\right) \\ \left(Acid\right) \\ NaOH\stackrel{}{\rightleftharpoons }N{a}^{+}\left(aq\right)+O{H}^{-}\left(aq\right) \\ \left(Base\right) \end{gathered}$$
2. Thus, in Arrhenius acids have in common that they ionized to give $H^{+}ions$ when dissolved in water or in an aqueous solution.