soma
Hazard to Others
Posts: 297
Registered: 31-7-2010
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pH of colored solution
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.
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Lambda-Eyde
National Hazard
Posts: 860
Registered: 20-11-2008
Location: Norway
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Titrate the mixture and calculate the pH using pH = -log[H<sup>+</sup>]?
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smaerd
International Hazard
Posts: 1262
Registered: 23-1-2010
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Mood: hmm...
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^
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]
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