A precipitate of copper(II) hydroxide is formed in a reaction. What change will help to dissolve the copper(II) hydroxide?

Cu^2+(aq) + 2OH^-(aq) Cu(OH)"subtext"2(s)

A. Adding NaOH
B. Adding HCl
C. Removing CuCl2
D. Removing H2O

is the answer for this d? removing H2O??

2 answers

I don't understand how the answer can be D. There is no water in the reaction. What you want to do is to shift the equilibrium to the left (remove the OH^-) and you can do that by adding an acid so I would choose B.
B. Adding HCl