Reactions of iodate with iodine in concentrated sulfuric acid. Formation of I(+3) and I(+1) compounds
2017; Elsevier BV; Volume: 691; Linguagem: Inglês
10.1016/j.cplett.2017.10.055
ISSN1873-4448
AutoresGuy Schmitz, Zoltán Noszticzius, Gábor Holló, Mária Wittmann, Stanley D. Furrow,
Tópico(s)Advanced Chemical Sensor Technologies
ResumoThe absorption spectra in a large range of concentrations show that the reactions of iodate with iodine in 96% sulfuric acid produce (IO)HSO4, I3+ and I5+, just like in the pure 100% acid. We discovered that, in 96% H2SO4, these reactions also produce I2O which is not formed in the pure acid. I2O is an important intermediate of reactions in diluted sulfuric acid, including the Bray-Liebhafsky reaction, but it had never been observed directly because of its very high reactivity. The equilibrium constants of the reactions producing these four compounds were determined.
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