# How do we represent the stoichiometric reaction between barium hydroxide and hydrochloric acid?

$B a {\left(O H\right)}_{2} \left(s\right) + 2 H C l \left(a q\right) \rightarrow B a C {l}_{2} \left(a q\right) + 2 {H}_{2} O \left(l\right)$
Barium hydroxide is reasonably insoluble. Added hydrochloric acid will neutralize the hydroxide function, and bring the metal up into solution, as the $B {a}^{2 +} \left(a q\right)$ species.