Which of the following halogens is the best reducing agent in aqueous solution? — Redox Reactions and Volumetric Analysis Chemistry Question

💡 Solution & Explanation

A reducing agent gets oxidized by losing electrons. Since iodine is the largest in size among the given halogens, it has the lowest ionization enthalpy and can most easily lose an electron to form $I_2$ , making $I^-$ the strongest reducing agent.