soma - 7-2-2011 at 17:25
Any suggestions how to take the pH of colored solutions? I don't want to use the pH meter because it might gum up the electrode and pH papers are
giving strange colors that aren't on the chart.
Lambda-Eyde - 7-2-2011 at 17:27
Titrate the mixture and calculate the pH using pH = -log[H<sup>+</sup>]?
smaerd - 7-2-2011 at 18:48
^
If you only need a ball-park range.
Dilute it until the solution is relatively clear. Test the pH with pH papers and adjust due to the dilution.
[Edited on 8-2-2011 by smaerd]