When chlorine gas was bubbled into an aqueous potassium iodide solution ,the colour of the solution changed from colourless to brown .explain why?

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Chlorine is higher on the reactivity scale than iodine. This means it is able to displace iodine, which is what has happened: Chlorine + Potassium iodide β€”> potassium chloride + iodine Iodine in solution is brown coloured

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