A redox indicator is a chemical compound that changes color in response to changes in the oxidation-reduction (redox) potential of a solution. These indicators are often used in titrations and other analytical procedures where it is important to monitor the redox state of a chemical species. Redox indicators typically undergo a change in their chemical structure when they are oxidized or reduced, which leads to a visible color change. This property makes them valuable for visualizing the endpoint of redox reactions.
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