A certain indicator, HA has a Ka value of .000050. The protonated form of the indicator is red...



The chemical indicator:

The chemical indicator, any substance that gives a visible sign, usually by a colour change, of the presence or absence of a threshold concentration of a chemical species, such as an acid or an alkali in a solution.

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Acid-Base Indicator: Definition & Concept


Chapter 11 / Lesson 11

Learn about acid-base indicators. Understand what acid-base indicators are, how they work to determine if a solution is acidic or basic, and see the examples.

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