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repeatedly changing color solution

2026-08-21 02:31
2026-08-21 05:28

Here are some examples of solutions that repeatedly change color: 1. ** Iodophor, Vitamin C, and Pigment Solution **: In a solution containing Iodophor, Vitamin C, and Pigment, Iodophor will dye the water brownish-yellow after being added into the water. After the addition of the oxidotic Iodophor and the reducing Vitamin C, the two will undergo an oxido-reduction reaction. When the povidone was completely reacted, if the solution contained a blue dye, the water would turn blue again. If he added substances such as povidone, the reaction could theoretically occur again and the color could change repeatedly. 2. ** Solution from the chemical traffic light experiment **: A solution made of soda, D-glucose, and indigo carmine. Indigo Carmine was a kind of oxido-reduction indicator, which could show different colors in different oxido-reduction states. Under the effect of the oxido-reduction reaction and the pH value, the solution would change between green, red, and yellow. When the conical flask was shaken, the contact surface of the solution with the air increased, and it would be oxided by the oxygen in the air. When it was left to stand, it would be restored by the glucose, thus forming a continuous cycle of color change. 3. ** A solution containing cyanidin-containing plant extract and acid and base **: A solution made of purple sweet potato stuffing (or purple cabbage, black goji berry). When white vinegar (acidic substance) or baking soda (basic substance) is added to it, the solution will change color. Because the structure of cyanidins was unstable under different pH conditions, they would appear in different colors. If the ph of the solution was changed several times, the color of the solution might change repeatedly. For example, adding white vinegar solution first would turn it red, then adding baking soda might turn it blue-green, and then adjusting the amount of acid and base substances, the color would constantly change. Read more exciting novels for free

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