A brown aqueous solution and a pink toluene layer form upon addition of acidified KMnO4 or Fe(NO3)3  Q: Give the correct formula of the ion that shows the following results

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llltkl | College Teacher | (Level 3) Valedictorian

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I- ion. Any strong oxidising agent e.g. KMnO4, Fe(NO3)3, or simply chlorine-water releases iodine which is brown in aq. soln. or turns an organic layer pink. 2I- + [O] + H2O gives you I2 + 2OH-