How can I increase CuCl2.2H2O solution's pH?

I have a 10mg/ml concentration CuCl2.2H2O solution and this solution's pH is 4.0. I want this solution's pH to be 8.0. I tried 1N NaOH and KOH but something were precipitated and I do not want...

17 September 2013 5,245 1 View