We have to determine why is there a need to use multiple pH indicators to determine the pH of different solutions.
Indicators are weak acids/bases. The pH at which an indicator changes color is determined by its pKIn value.
An indicator has different colors above and below its pKIn value.
Effect of cations on solution pH.
The pH values of 1.0 M solutions of four nitrate salts are estimated using acid-base indicators.
Why do we need to use multiple acid-base indicators in this figure?
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