Chemistry
Explain why chlorine turns moist starch iodide paper blue-black.
Practical Chemistry
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Answer
Chlorine reacts with potassium iodode to form iodine. This iodine reacts with starch to form blue black colour.
Cl2 + 2KI ⟶ 2KCl + I2
Starch + I2 ⟶ Blue black colour
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