Qstnid -I-2- Why Is Sulphuric Acid Not Used During The Reaction Of Alcohols With Ki? - 01: Haloalkanes And Haloarenes - Neet-xii-chemistry

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NEET-XII-Chemistry

01: Haloalkanes and Haloarenes

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#2
Why is sulphuric acid not used during the reaction of alcohols with KI?

Ans : In the presence of sulphuric acid (H₂SO₄), KI produces HI

Since

is an oxidizing agent, it oxidizes HI (produced in the reaction to I₂₎.

As a result, the reaction between alcohol and HI to produce alkyl iodide cannot occur. Therefore, sulphuric acid is not used during the reaction of alcohols with KI. Instead, a non-oxidizing acid such as H₃PO₄is used.