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Why is sulphuric acid not used during th...

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

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Cone. `H_2 SO_4` cannot be used along with KI in the conversion of an alcohol to an alkyl iodide as it first converts KI to HII and then oxidises it to `I_2`
` H_2 SO_4 to H_2 O + SO_2 +[O]`
` KI + H_2 SO_4 to KHSO_4 +HI ] xx 2`
` 2HI +[O] to H_2 O +I_2`
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