Abstract
A voltammetric study, with a platinum electrode, of the reduction of iodine in anhydrous acetic acid media and measurements of equilibrium potentials of iodine/ iodide mixtures in 0.5 M NaClO 4 and 1 M NaOAc + 0.5 M NaClO 4 media, have allowed the determination of the formation constant of the iodine-iodide complex in acetic acid : NaI +I 2 ∡ = NaI 3, log β mole −1 l = 5.24 ± 0.12. This value is greater than that given by Guidelli and Piccardi (4.4). The oxidation of iodine has been studied by voltammetry, constant potential coulometry and also with a ring-disk electrode. The observed phenomena can be explained as follows: iodine is oxidized to I + cations, which then react with the acetic acid to form mono-iodoacetic acid. This acid is then oxidized in the same way as for the Kolbe reaction with consumption of acetic acid and regeneration of iodoacetic acid.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
