JEE Advanced 2025 · Paper 1 · Chemistry Q3

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ChemistrySingle correct+3 / -1Question 35 of 48

One of the products formed from the reaction of permanganate ion with iodide ion in neutral aqueous medium is

\ce{I2}

\ce{IO3-}

\ce{IO4-}

\ce{IO2-}

Answer and worked solution

Official answer: B

In neutral (or faintly alkaline) solution, permanganate is reduced to $\ce{MnO2}$ and iodide is oxidised to iodate:
$\ce{2MnO4- + I- + H2O -> 2MnO2 + IO3- + 2OH-}$

Topics:Important compounds (KMnO4, K2Cr2O7)Balancing redox reactions

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