I understand what you mean in regards to the acidity/basicity. I thought I read that the natural pH of a Cu(II) acetate solution was basic, but now I am having trouble find the source of that information.
Either way, if the solution is acidic, what would happen upon the addition of KOH to bring the solution up to a pH = 8, 9, or 10? Should there be substitution of the acetate ligands with hydroxide as the pH increases? I assume maybe formation constants would be applicable here.
(Just as a note, I am better trained as an organic chemist and am just now breaking into inorganic chemistry due to work so I am a bit behind on the "general knowledge" since it has been some time for me!)