15. A certain indicator, HA, has a Ką value of 2.0 × 10-6. The protonated form of the indicator is yellow and the ionized form is red.What is the pK₂ of the indicator?apKa=What is the color of this indicator in a solution with pH = 4?redyelloworange

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pK₂ = What is the color of this indicator in a solution with pH = 4?

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter24: Introduction To Spectrochemical Methods

Section: Chapter Questions

Problem 24.1QAP

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Question

15.

A certain indicator, HA, has a Ką value of 2.0 × 10-6. The protonated form of the indicator is yellow and the ionized form is red.
What is the pK₂ of the indicator?
a
pKa
=
What is the color of this indicator in a solution with pH = 4?
red
yellow
orange

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