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23 Φεβ 2023 · Indigo carmine undergoes a reversible reduction. Shaking the flask brings more oxygen into the solution, provoking the formation of the oxidized (green) form. The indigo carmine will eventually undergo reduction again to its reduced (yellow) form.
- Traffic Light Reaction
Principle: This demonstration involves a reversible...
- Traffic Light Reaction
15 Αυγ 2020 · Principle: This demonstration involves a reversible oxidation-reduction reaction between I.C., oxygen (O 2), and a reducing sugar. I.C. is a both a pH and a redox indicator; the oxidized form is blue below pH 11.4, yellow above pH 13, and green in the intermediate range, while the reduced form is yellow at all pH levels.
A colorful chemical demonstration showing the oxidation/reduction reaction using indigo carmine as the indicator.
Traffic Light Reaction. In this activity, a redox indicator (indigo carmine) changes color as a result of electron transfer. The introduction of oxygen through swirling causes the indigo carmine to turn green as it is oxidized.
31 Οκτ 2021 · The chemical traffic light is an example of a clock reaction. Indigo carmine is a redox indicator that changes from blue in water to green in the alkaline glucose solution. Shaking the solution dissolves oxygen from air into the liquid and oxidizes indigo carmine.
28 Απρ 2021 · The interplay between the kinetics of oxidation by oxygen and reduction by glucose are used to interconvert the organic dye, indigo carmine, between red, yellow, and green forms.
29 Σεπ 2020 · Also known as the traffic light reaction, indigo carmine produces a colorful demonstration. In this activity, a redox indicator (indigo carmine) changes color as a result of electron transfer. The introduction of oxygen through swirling causes the indigo carmine to turn green as it is oxidized.
