Question

In alkaline solution, KMnO₄ oxidises KI to ______ but in acidic solution it oxidises KI to ______.

Answer 1

In alkaline solution, KMnO₄ oxidises KI to KIO₃ but in acidic solution it oxidises KI to I₂.

Explanation:

In alkaline medium, KMnO₄ is a mild oxidising agent and converts iodide (I⁻) to iodate \[\ce{(IO^-_3)}\]. In acidic medium, it acts as a strong oxidiser and changes I⁻ into free iodine (I₂), which appears as brown vapours or solution.