why sulphuric acid not used during reactions of alcohols with KI

Asked by lokesh WARAN | 29th Dec, 2013, 09:54: PM

Expert Answer:

Sulphuric acid oxidises iodide ions (from the hydrogen iodide produced) to iodine and hence there is hardly any hydrogen iodide left for the formation of alkyl iodide. 

Therefore, Phosphoric (V) acid is used instead of concentrated sulphuric acid.

Answered by  | 30th Dec, 2013, 11:33: AM

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