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A colorful chemical demonstration showing the oxidation/reduction reaction using indigo carmine as the indicator.
2 Ιαν 2017 · Indigo carmine can exist in oxidized (loss of electron), reduced (gain of electron) and intermediate forms. Each form has a slightly different structure which means that each structure absorbs...
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.
31 Οκτ 2021 · 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. Dissolving a small amount of oxygen by lightly swirling the flask turns the liquid red.
23 Φεβ 2023 · Demonstration. Indigo carmine is added to a 1:1 mixture of ethanol and water. KOH is dissolved in water, dextrose (glucose) is added to this solution, along with the indicator solution.
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.
"Traffic Light" Chemical Reaction Demonstration of the traffic light reaction. Initially the beaker contains a solution of glucose, a sugar, to which a...
