Enthalpies of the formation and decomposition of hydrogen trioxide HOOOH in an aqueous solution

A. V. Levanov; O. Ya. Isaikina; V. V. Lunin

doi:10.1134/S0036024416110145

Enthalpies of the formation and decomposition of hydrogen trioxide HOOOH in an aqueous solution

作者: Levanov A.V.¹, Isaikina O.Y.¹^,2, Lunin V.V.¹^,2
隶属关系:
1. Department of Chemistry
2. Topcihev Institute of Petrochemical Synthesis
期: 卷 90, 编号 11 (2016)
页面: 2136-2141
栏目: Chemical Thermodynamics and Thermochemistry
URL: https://bakhtiniada.ru/0036-0244/article/view/168918
DOI: https://doi.org/10.1134/S0036024416110145
ID: 168918

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The enthalpies of the formation and decomposition of hydrogen trioxide are estimated from the heating curves of peroxide-radical condensates synthesized from gaseous O₂ + H₂ mixtures. Enthalpy of decomposition Н₂О₃(aq.) → Н₂О(liq.) + О₂(gas) is −31.2 ± 1.5 kcal/mol, and enthalpy of formation Δ_fH(H₂O₃, aq.) =–37.5 ± 1.6 kcal/mol. Both values correspond to the temperature range of 240–265 K.