The following indicators were used in a solution with the provided pOH or hydronium concentration. Select the correct colour that the indicator would be. IndicatorMeasurementColour of Indicatorphenol redpOH = 6.8 IndicatorMeasurementColour of Indicatorbromocresol green[H3O+(aq)] = 2.5 x 10-4 mol/L

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Answered: Indicator Measurement Colour of…

Indicator Measurement Colour of Indicator phenol red pOH = 6.8 Indicator Measurement Colour of Indicator bromocresol green [H3O+(aq)] = 2.5 x 10-4 mol/L

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter21: Potentiometry

Section: Chapter Questions

Problem 21.9QAP

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Concept explainers

Potentiometric Titrations

Potentiometric titration is one of the important titration methods and is mainly carried out to characterize acid solutions. It follows a method similar to that of the normal titration technique, but the main difference is that there is no indicator used in the potentiometric titrations. Instead of using an indicator, electrodes are employed for monitoring the whole titration process. A scientist named Robert Behrend did the potentiometric titration for the first time, and it was done using the mercurous solution and potassium chloride.

Question

The following indicators were used in a solution with the provided pOH or hydronium concentration. Select the correct colour that the indicator would be.

Indicator	Measurement	Colour of Indicator
phenol red	pOH = 6.8

Indicator	Measurement	Colour of Indicator
bromocresol green	[H₃O⁺(aq)] = 2.5 x 10^-4 mol/L

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