When thoroughly evaluating the thermodynamics and required reaction conditions of direct aromatic io — Haloalkanes and Haloarenes Chemistry Question
Question
When thoroughly evaluating the thermodynamics and required reaction conditions of direct aromatic iodination compared to standard chlorination, which of the following analytical statements are factually correct?
💡 Solution & Explanation
A) False. The generation of $I^+$ and its addition is generally endothermic or weakly exothermic, making the forward reaction sluggish and thermodynamically unfavorable compared to chlorination. B) True. The reaction heavily favors the reactants due to $HI$ acting as a reducing agent. C) True. Oxidizing agents ($HIO_3, HNO_3, HgO$) consume $HI$ to yield $I_2$ and water, driving the reaction forward. D) False. When strong oxidizing agents like $HNO_3$ are used, they can often directly oxidize $I_2$ to generate the active $I^+$ electrophile, bypassing the strict need for traditional Lewis acid catalysts.