Question

In the Iodination of alkane, Some HIO₃ is added so that :

• A. Reaction is made faster
• B. Reaction is made more selutive
• C. HI formed is Oxidisid to I₂
• D. None of the above

Answer 1

The correct option is C

HI formed is Oxidisid to I₂

iodination (Direct Free radical iodination) is not favorable.

The chain initiation and the overall chain propogation steps are highly endothermic

But adding $HI{O}_3$ improves the yield of the alkyl iodide. This is due to the removal of the highly-reducing Hl, which is oxidized to $l_2$.