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CBSE Class 12-science Answered

why sulphuric acid not used during reactions of alcohols with KI
Asked by lokesh WARAN | 29 Dec, 2013, 09:54: PM
answered-by-expert 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 | 30 Dec, 2013, 11:33: AM

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