# If HCl is added to a solution of copper(II)hydroxide how does this affect the solubility of the copper salt?

Feb 10, 2016

$C u {\left(O H\right)}_{2}$ is quite insoluble; $C u C {l}_{2}$ is quite soluble in water:
$C u {\left(O H\right)}_{2} \left(s\right) + 2 H C l \left(a q\right) \rightarrow C u C {l}_{2} \left(a q\right) + 2 {H}_{2} O \left(a q\right)$
In solution, the copper ion probably exists as ${\left[C u {\left(O {H}_{2}\right)}_{6}\right]}^{2 +}$, a beautiful blue coloured species.