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lbvjy [14]
3 years ago
10

Why does plain paper turn black after a few drops if iodine are applied

Biology
1 answer:
faltersainse [42]3 years ago
3 0

When iodine reacts with starch, it is trapped in the starch's helical structure forming a blue-black precipitate. Iodine is not very water soluble, so in making an iodine solution, potassium iodide (KI) is added. This results in the formation of a triiodide complex, which is completely soluble in water.

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