The compound copper(II) bromide is a strong electrolyte. What is the reaction when solid copper(II) bromide is put into water?

$C u B {r}_{2} \left(s\right) \rightarrow C {u}^{2 +} \left(a q\right) + 2 B {r}^{-} \left(a q\right)$
Upon dissolution of anhydrous cupric bromide, the beautiful blue colour of $C {u}^{2 +} \left(a q\right)$, i.e. ${\left[C u {\left(O {H}_{2}\right)}_{6}\right]}^{2 +}$, would develop.